Silicon Avatar (episode)
The Enterprise gives chase to the Crystalline Entity after it destroys a Federation colony. A xenologist, who has a motivation all her own with respect to the Crystalline Entity, is assigned to the Enterprise to assist in the investigations.

Summary

Teaser
Commander Riker is on the surface of a lush and life-filled planet called Melona IV. He is speaking to Carmen Davila about plans for the construction of a colony there, and plans a dinner date with her. Doctor Crusher and Lieutenant Commander Data are also present and approach the two. Riker hears a loud noise in the distance and asks Carmen if construction is scheduled for today. She says there is not. The sky suddenly darkens and the Crystalline Entity appears. Data suggests that they might find cover for the colonists in caverns that lie to the east. Riker looks up at the Crystalline Entity looming large in Melona's sky.

Act One
The Crystalline Entity destroys everything in its path with some kind of energy beam, as the Enterprise away team and the colonists flee to the caverns. Riker's friend Carmen shouts at Riker for assistance as she goes back to help an old man who has fallen in the rush. Riker rushes over and yells out Carmen's name before witnessing her and the old man she was trying to help get vaporized by the Entity. 

The 's sensors pick up an atmospheric disturbance, possibly an electromagnetic storm on Melona IV. The Enterprise is twenty-seven hours away at present speed. Captain Picard orders Ensign Reel to increase the ship's speed to warp 8.

Back on the planet, the colonists have taken shelter underground. Riker and Data seal off the entrance with their phasers. Data believes that the refractory metals in the rock strata will protect them but is uncertain they will. Crusher is concerned that they and the settlers will run out of air soon.

On the Enterprise, Picard increases speed to warp 9. They are still six hours away from Melona IV.

Back on the planet, the cavern's oxygen is almost completely depleted but they haven't heard the Entity in an hour. Riker and Data respond to a sudden sound near the entrance of the cavern by taking cover, pulling out their phasers and aiming them at the blocked opening. Lieutenant Worf enters the cave along with a rescue party, which includes Lieutenant Commander Geordi La Forge. Riker exits the cavern to see that the surface of the planet has been reduced to a barren wasteland as far as the eye can see.

Act Two
"Captain's Log, Stardate 45122.3. We have notified Starfleet Command of our intention to pursue and investigate the Crystalline Entity. To that end, we have been joined by Doctor Kila Marr, a xenologist who has made studying the Entity her life's work."

Doctor Marr beams aboard the Enterprise and is escorted by Riker to meet with the senior staff in the observation lounge. She asks Riker if he was on the surface during the attack and he confirms he was. Marr is amazed and notes that he and his group are the only known beings ever to survive an assault by the Crystalline Entity. Later, in the observation lounge, Data confirms that it was the same entity that destroyed the colony at Omicron Theta. Dr. Marr says that the entity is basically an electromagnetic collector that converts all organic matter to energy. She states that in eleven recorded attacks, there have never been any survivors. Data surmises that the presence of kelbonite and fistrium in the cavern may have protected them. Picard orders Data to accompany Dr. Marr to the planet's surface to study the cavern. Dr. Marr is obviously displeased with having to work with Data, but Picard insists, and she ultimately relents. After everyone leaves, Counselor Troi expresses to Picard her concern that he may have forced Dr. Marr and Data together far too soon. "If her discomfort is going to affect her judgment or her objectivity, I need to know now.", Picard states.

On the planet, Dr. Marr tells Data while examining her tricorder readings in the cavern, that the reason for her active distrust of him is because his brother Lore had aided the Entity in destroying the colony at Omicron Theta. Further, she believes that the reason the Entity allowed the colonists to survive was due to Data's presence. She tells Data that her sixteen-year-old son was killed during the attack on the colony at Omicron Theta and that is why she has devoted her life to studying the Entity. She promises to have Data dismantled piece by piece if she finds out that he has been assisting the Crystalline Entity as his brother did.

Act Three
La Forge, Data, and Dr. Marr are in engineering. Data suggests that the soil samples should be scanned for gamma radiation to see if there are any traces of antiprotons. It is determined that the Crystalline Entity deposits these antiprotons as it travels through space. Soon the crew is able to determine the likely course the Entity has taken. They set course for the Brechtian Cluster.

Dr. Marr has developed a modification of the photon torpedoes to destroy the Entity and hands them to Worf so he can begin. Picard has reservations and tells her that he intends to try and communicate with it. Dr. Marr is incredulous and very upset at Picard's desire to preserve a lifeform responsible for the death of thousands of innocent people. However, Picard reiterates his point, asking that Dr. Marr work together with Data to find a way to communicate with the Entity. 

She then joins Data in his quarters. He is playing the guitar when she enters. Data reveals to her that his memory contains the personal logs and even some personal memories of all 411 Omicron Theta colonists, including her son Raymond, who was called "Renny."

Data and Dr. Marr are summoned to the bridge, where they learn that the freighter Kallisko is under attack. Dr. Marr is visibly distraught to hear the dying screams of the freighter's crew.

Act Four
"Captain's log, Stardate 45125.7. An away team, led by Commander Riker, has conducted a thorough survey of the alien ship Kallisko and has returned to the Enterprise to report."

An away team is sent over to the Kallisko, only to find that the entire ship is devoid of life. Picard informs Data and Dr. Marr that they may need the communication method soon. In the turbolift, Dr. Marr explains to Data why she was preoccupied since they surveyed the Kallisko. She explains to him that she found it difficult to not think about her son and comparing the screams they heard from the crew of the Kallisko to soldiers on the battlefield crying out for their mothers. Her greatest sorrow she reveals was the fact that her son died without her coming back to him. 

Back in his ready room, Picard informs Riker that Starfleet will return Carmen's belongings to her family and asks him to write a letter to them as well. Riker asks for permission to speak freely and tells Picard that he is beginning to think that maybe Dr. Marr was right in that the Entity should be destroyed when they encounter it again because it will just continue killing. Picard, however, believes that Riker is influenced by personal feelings over the death of Carmen. Riker immediately takes offense to Picard's remark, stating that he is not a raw cadet and that he has lost people on missions before and that if they take their time to communicate with the Entity, they might lose their chance to destroy it; something Riker does not think they can risk. Picard responds with pensive silence as Riker, in a rather sarcastic tone, states that he thinks will now go write that letter to Carmen's family. 

Data and Dr. Marr continue to work on a way to communicate with the Entity. They decide to use a graviton pulse to communicate with it. Dr. Marr creates a subroutine to allow them to vary the frequency of the pulses from the bridge. 

Dr. Marr, in an emotional tone, requests to Data that he recite one of Renny's journal entries using Renny's voice. While Data recites a letter written by Renny in her late son's voice, Dr. Marr is visibly moved.

Act Five
"Captain's log, Stardate 45129.2. We are still in pursuit of the Crystalline Entity. Data and Dr. Marr are prepared to attempt communication with the being when we intercept it. I will admit to some uncertainty about the prospect; it could prove to be a scientific triumph or a catastrophe."

While still five light years away from the Brechtian Cluster, they begin emitting five-nanosecond graviton emissions at one pulse per second. They increase to ten pulses per second, and Worf detects a large mass on an intercept course moving at warp speed. It is the Crystalline Entity, which stops near the Enterprise. They increase the graviton pulses to twenty per second and notice a signal coming from the Entity. A pattern emerges, and Data begins to decipher it. 

Dr. Marr then tries a continuous beam instead of the pulsing one. The Entity moves away slightly, as if hurt by the change. Troi believes the Entity does not like what they are doing, so Picard orders a return to the intermittent signal, but Dr. Marr doesn't acknowledge the command and the graviton pulse begins to make the Entity unstable. Troi then senses something is very wrong and Picard orders Data to terminate the signal, but Dr. Marr has locked out the controls with an access code. In a somewhat unbalanced state, Marr says she's doing this for Renny. La Forge can bypass the lockout, but it is too late: the amplitude reaches a critical point, and the Entity is completely shattered in a spectacular explosion.

The whole bridge is aghast of what occurred and Picard, with a quiet anger in his voice, orders Worf to escort Dr. Marr to her quarters. Dr. Marr remarks that the Entity "will never hurt anyone again". Data volunteers to escort her, which Picard grudgingly agrees, but because of her unhinged state of mind, he doesn't want her left unattended. 

A very shaken Dr. Marr asks Data if he thinks Renny would understand why she did it. Data states that it is his belief that Renny would not have approved of her actions, because her decision has effectively ended her career as a scientist, and he was proud of the scientific work that she did. He notes that Renny would have been sad over it and says he cannot help her. Reality sets in for the shocked doctor about what she has just done.

Log entries 
 Captain's log, USS Enterprise (NCC-1701-D), 2368

Memorable quotes
"And as you know… I provide the most memorable desserts."
"My favorite part of dinner."
 - Carmen Davila and William Riker

"Commander? Commander Riker, are you there?"
"Lieutenant Worf, I don't think I've ever seen a more beautiful sight."
 - Worf and Riker

"Remarkable. You and your group are the only known beings ever to survive an assault by the Crystalline Entity!"
 - Kila Marr, to Riker

"And your android, he was there too?"
"Lieutenant Commander Data was there, yes."
 - Kila Marr, first showing her hostility towards Data while speaking to Riker

"Well?"
"I don't think you need an empath to sense that woman's feelings. There's hostility that she seems to have transferred from Lore to Data. Perhaps you shouldn't have forced them together so soon."
"If her discomfort is going to affect her judgment or her objectivity, I need to know now."
 - Picard and Troi

"If we can possibly avoid firing on it, then I would hope we…"
"Aren't you going to kill it?"
 - Picard and Marr, on the Crystalline Entity

"I would argue that the Crystalline Entity has as much right to be here as we do."
 - Picard

"Perhaps the combination of the two metals prevented the Entity from…"
"Perhaps it was you!"
"I do not understand."
"Maybe it was your presence that made the Entity pass over the people in this cave, did that occur to you?"
"I cannot see what effect my being here would have had…"
"If you had been in contact with the Entity, if that's the reason Melona was attacked, surely it wouldn't have killed its ally."
"Do you believe that I lured the Entity here?"
"Did you?"
"No, Doctor. Because Lore betrayed the colonists on Omicron Theta, you believe that I am capable of the same behavior. You are mistaken, Doctor. My programming is distinctly different from Lore's."
"You don't understand, I am accusing you of collaborating with that monster!"
"I do understand. And I am attempting to explain to you it is impossible."
"Amazing. You can't feel anything, can you? Nothing I say to you hurts you?"
"That is true, Doctor."
 - Data and Doctor Kila Marr, desperately attempting to intimidate the android, and then being faced with the fact that it is impossible.

"I took my last exam today. I think I did all right on everything except cellular biology. I know you think it's important, Mom, but I don't see how I'm ever going to use that stuff. In a couple of weeks, a bunch of us are going on an archaeological dig in the mountains. The Wallaces said it would be all right as long as we had adult supervision. So don't worry, Mom. They're looking out for me. They're really great people, and I like them a lot, but they're kind of serious. They don't have your sense of humor, Mom. Mom… I miss you."
 - Data, reciting one of Raymond Marr's journal entries in his voice to Kila Marr

"Why are we pursuing the Entity, if not to destroy it?"
"We are not hunters, Doctor. Nor is it our role to exact revenge."
"What do you propose? We track it down, greet it warmly and ask it if it would mind terribly not ravaging any more planets?!"
 - Doctor Kila Marr and Jean-Luc Picard

"Doctor, the sperm whale on Earth devours millions of cuttlefish as it roams the oceans. It is not evil. It is feeding."
 - Picard, defending the Crystalline Entity's nature as a sentient lifeform

"You say you did it for him but I do not believe he would have wanted that. Yes, I believe your son would be very sad now. I am sorry, Doctor, but I cannot help you."
 - Data, to Kila Marr, after she has destroyed both the Crystalline Entity and her career (last lines)

Background information

Production history 
 Final draft script:  
 Filmed:  – 15 August 1991
 Additional day of blue screen unit filming: 26 August 1991
 Premiere airdate: 
 First UK airdate:

Story and script 
 The story for this episode was pitched by Lawrence V. Conley. At the time, the writing staff were trying to avoid sequels. However, this premise caught the attention of Jeri Taylor. She commented, "[O]f all the characters to bring back, who'd have thought the Crystalline Entity? But the Moby Dick premise of this obsessed woman whose son's consciousness was stored in Data was too good to pass up." () Michael Piller agreed, "It was a great premise. The idea of the crystalline entity as Moby Dick really appealed to me." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 229)
 Taylor elaborated, "The crystalline entity was no one's favorite optical or bad entity, and there were doubts as to whether we should even resurrect it. Along came this story from a very young, inexperienced writer, Lawrence Conley, and he tapped into something that made us say, 'This works, this is a story that really has to be done.' I wanted to do it because I felt – being a mother and a woman – I could identify with what would have to be the worst kind of loss anyone could ever suffer, which would be the death of a child. I was really able to tap into those feelings and tell a story about a woman whose vendetta over the loss of her son ruined her." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 229)
 According to Taylor, the story was helped by its title, even though "no one knew exactly what it meant". While "avatar" has several different meanings, the intended meaning here was a "repository of knowledge", referring to Data. ()
 According to Brent Spiner, production problems affected the writing of the episode. He recalled, "Apparently they were having problems getting the next episode ready for production and this script was ready to go, but it wasn't very remarkable." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 229)

Production 

 "Silicon Avatar" was filmed between Wednesday  and Thursday  on Paramount Stage 8, 9, 16, outside of Paramount Stage 16 and on location at the Golden Oak Ranch in the , north of . () An additional day of blue screen unit filming was on Monday  on Paramount Stage 16.
 On Wednesday  and Thursday , the Directors Guild Educators Workshop visited the set. On Friday , the Emmy Awards shot the B-Roll during the bridge scenes and on Tuesday , journalists and photographers from  visited the set. The call sheet for Monday  features the note "Monday is Pink Shirt Day!".
 As with its first appearance, the Entity was computer generated. ()
 The destruction left by the Entity was accomplished by adding eighteen-inch miniature trees to the foreground after the live filming of the fleeing colonists. Rob Legato noted that the light beam was animated on computer afterwards, but the "sand trap" was actually a four-foot-wide tarp spread along the ground with air shot up from under it through the mesh. ()
 The guitar piece played by Data is "Prelude No. 2 in A Minor" by .

Continuity 
 This episode marks the return (and destruction) of the Crystalline Entity previously seen in . The Entity would later be referenced in .
 When Geordi La Forge compliments Dr. Marr on her professional handling of a console in main engineering, an LCARS graphic is seen for a short time. This is a re-use of the hydrogen-alpha emission (with the 4077) from .
 This is one of the few episodes in which Data demonstrates his ability to precisely mimic the speech patterns of other individuals. Other examples include  where he repeats Q's description of the trial against Humanity,  where he employs Captain Picard's command authorization code to commandeer the main bridge, and  where he mimics Captain Picard's voice to toy with Geordi La Forge.

Reception 
 Shortly prior to this episode's initial airing, Rick Berman referred to it as "a show that I think is going to be wonderful." ()
 However, Brent Spiner was not fond of the installment, noting, "I didn't think it was a very good episode. If this was to really conclude the story of the crystalline entity, I don't think it was really the way to go." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 229)
 Michael Piller espoused similar sentiments. "I don't think the show was as effective as I wish it could have been." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 229)
 Director Cliff Bole rejected claims that the crew's attempts to communicate with the Entity after all the destruction it had caused were wildly optimistic. "It's not, if you can control the fact it won't happen again, and I think Picard made it clear that he wouldn't destroy anything until it was explored. And it did finally show that it had another side, and I think that's what he was saying. It can be characterized with modern society's attitude, 'Let's make sure we're not making any mistakes,' knowing full well they can handle it if they were wrong." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 229)
 Bole was overall satisfied with the episode, but thought that if he was directing it again, he would have made some changes. "I think I would have made Marr stronger in places and in the ending I thought we were weak. Then again, she was over the edge. You know, when you've only got 40 minutes of picture, it's tough to take a character and go all the way through the change and what happens to somebody. We're doing short stories here. Why does she do what she does? Sometimes you just don't have the film time to explore it properly." Bole added that, unlike a feature film, there is insufficient time to reshoot scenes. "[Y]ou stand on what you've done." (Captains' Logs: The Unauthorized Complete Trek Voyages, p. 229)
 A mission report for this episode by John Sayers was published in .

Video and DVD releases
 Original UK VHS release (two-episode tapes, CIC Video): Volume 52, 
 UK re-release (three-episode tapes, Paramount Home Entertainment): Volume 5.2, catalog number VHR 4761, 
 As part of the TNG Season 5 DVD collection

Links and references

Starring 
 Patrick Stewart as Capt. Jean-Luc Picard
 Jonathan Frakes as Cmdr. William Riker

Also starring 
 LeVar Burton as Lt. Cmdr. Geordi La Forge
 Michael Dorn as Lt. Worf
 Gates McFadden as Dr. Beverly Crusher
 Marina Sirtis as Counselor Deanna Troi
 Brent Spiner as Lt. Commander Data

Guest stars 
 Ellen Geer as Kila Marr
 Susan Diol as Carmen Davila

Uncredited co-stars 
  as Melona IV technician
 Joe Bauman as Garvey
 Cullen Chambers as command officer
 Tracee Lee Cocco as Jae
 Cooper as Reel
 Tony Cruz as 
 W. Dixon as Melona IV colonist
 Gina Gallante as Melona IV scientist
 Goldie Ann Gareza as Melona IV technician
 Michele Gerren as sciences officer
 Nicole Huang as Melona IV colonist
 Gary Hunter as sciences officer
 Ken as Melona IV colonist
 Jason Marsden as Raymond Marr (voice)
 Betty Matsushita as Melona IV colonist
 Tim McCormack as  (stock footage)
 Jay Montalvo as operations officer
 Wilfred Moore as Melona IV colonist
 Henry Murph as Melona IV scientist
 Terry Noel as operations ensign
 Leah Nova as Melona IV colonist
 R. Park as Melona IV colonist
 R. Perez as Melona IV colonist
 Randy Pflug as 
 Jerome Reed as Melona IV colonist
 Bill E. Rogers as operations ensign
 Richard Sarstedt as command ensign
 Eric Schwartz as Melona IV technician
 Victor Sein as Melona IV techncian
 Sissy Sessions as Melona IV colonist
 Star Shulman as Melona IV colonist
 Stedman as Melona IV colonist
 Noriko Suzuki as operations ensign
 John Tampoya as Melona IV colonist
 Uchizono as command officer
 Robin Van Sharner as Melona IV colonist
 Guy Vardaman as Darien Wallace
 Dru Wagner as Melona IV colonist
 Josh Wagoner as Melona IV colonist
  as Melona IV scientist
 Unknown performers as
 Female operations ensign (stock footage)
 Female sciences officer
 Kallisko captain (voice)
 Three Melona IV colonists

Stand-ins 
 David Keith Anderson – stand-in for LeVar Burton
  – stand-in for Ellen Geer
 Kristen – stand-in for Susan Diol
 Nora Leonhardt – stand-in for Marina Sirtis
 Tim McCormack – stand-in for Brent Spiner
 Lorine Mendell – stand-in for Gates McFadden & Ellen Geer
 Richard Sarstedt – stand-in for Jonathan Frakes
 Dennis Tracy – stand-in for Patrick Stewart
 James Washington – stand-in for Michael Dorn

References 
2322; ability; access code; accusation; adult; adventurer; air; alien; ally; amount; amplitude; android; antiproton; archaeological dig ; Argos system; arts center; As You Like It; assault; atmosphere; atmospheric disturbance; attack; away team; bacteria; battlefield; beacon; behavior; bitrium; Boreal III; bottle; Brechtian Cluster; Brechtian Cluster planets; brother; bruise; cadet; calculation; camp ration; career; cave; cavern; cellular biology; cellulose; championship emblem; chance; chicken curry; children; choice; Clendenning; collaboration; colonist; computer; concentration; construction; course; crystal; Crystalline Entity; cuttlefish; danger; ; Davila's family; death; deck; deposit; dessert; destination; dinner; discomfort; distress call; doctor; dried; Earth; east; electrical storm; electromagnetic collector; empath; energy; entrance; estimate; evasive action; evidence; evil; exam; existence; experience; experiment; expert; fact; family; feeding; feeling; file; firing pattern; fistrium; Forlat III; "free spirit"; frequency; friend; gamma radiation; gamma radiation pattern; gamma scan; gentleness; girlfriend; goblet; graviton; graviton beam; graviton emission (graviton pulse); greenery storage; grove; guitar; hail; heart; hertz; home; hospital facility; hostility; hour; house; humor; hunter; hydrocarbon; idea; impulse engine; information; insect; intention; interview; investigation; "iron out"; Janina; joy; ; "just a minute"; Kallisko; Kallisko starbase; kelbonite; keV; kindness; knowledge; lanthanide; lateral sensor; letter; light; light year; living matter; location; log; logarithmic scale; Lore; machine; ; mass; Melona IV; Melona IV star; Melona colony; memory; memory banks; memory cell; metal; million; minute; mission; monocaladium; monster; month; mother; mountain; nanosecond; need; nesting instinct; neural net; nitrate; north; number one; object; observation; ocean; Omicron Theta; Omicron Theta colony; "on my conscience": outpost; override sequence; parameter; Parrises squares; particle phaser; pattern; peace; permission; person; personal effects; personal journal; photon torpedo;  pioneer; place; plant; ; Prelude Number 4 in A minor; program; programming; pulse per second; pulse width; "put down roots"; quarters; ration; readout; reason; recollection; record; refractory metal; replicator; report; residential pod; resonance; result; revenge; rock; rock formation; rock strata; schematic; school; scrape; scream; science station; scientist; school; schoolmate; seed; sense of humor; skeleton crew; soil; soil bacteria; soldier; son; ; sound; space; spectrographic analysis; speculation; speed; sperm whale; sporting event; survivor; starbase; Starfleet; Starfleet Command; story; subroutine; subspace channel; subspace message; subspace signal; supervision; surface; synaptic pattern; temporal lobe; tent; theory; thought (thinking); thousand; trace element; transport ship; tree; tricorder; tree; turbolift; tunnel; unconsciousness; ventilation; veteran; wall; Wallace family; vegetation; vibration; voice; warp engine; warp speed; week; weapon; wine; witness; writing; xenologist (xenology); year

Other references 
 USS Enterprise (NCC-1701-D) dedication plaque: Advanced Technologies Group; ; ; ; ; Engineering Group; ; ; ; ; ; ; ; ; Mars; ; ; ; ; ; ; ; ; ; Starfleet Command; ; ; Utopia Planitia; Warp Technologies Development Group; ; Yard Engineer;

External links
 
 
 
 

de:Das Recht auf Leben
es:Silicon Avatar
fr:Silicon Avatar (épisode)
it:L'entità di cristallo (episodio)
ja:殺戮の宇宙水晶体（エピソード）
nl:Silicon Avatar
pl:Silicon Avatar
TNG episodes