call them the fly pizza thing from hell . or the rubbery sucker from another galaxy . but and whatever you do and do not let one of them attach to your back and sticking you with it alien stinger you would be in for some painful day . the final episode of the first season be a straight out action adventure and a crackerjack alien invasion thriller . it start out strong and with some ominous mystery on the nature of the threat and escalate to far out alien monster attack mode . though hamper by the standard cheesy tv sfx of the sixty and you get ta give the storyline some prop for come up with an unusual alien invader represent it basically a huge brain and but each cell be not physically connect each cell fly about on it own and cause havoc . the low budget be also unable to show thousand of these thing fly around and but that what must have happen on this colony of deneva ( an actual futuristic city on display here and not just a matte paint zowie . ) . there be some clumsy moment in the script and direction a the story jump along . in one instance and after the land party hear a woman scream and kirk order everyone to fan out . but they run group close together . but and this be minor compare to some serious lapse in logic later in the episode . spock and mccoy and everyone in the dozen science lab aboard the starship can not figure out a way to damage these alien sucker after hour of test and despite be give a great clue by way of the sun while then kirk idly latch on to a way at the last minute maybe he be the only one be objective . then they rush spock into another test and with kirk in full agreement and and blind him second before mccoy find out it wasn not necessary . kirk give mccoy a if look can kill stare and stomp out . incompetence be really spread around in this episode . the writer try to capitalize on the main trio establish relationship to create some extra tension and but it doesn not really ring true . even nurse chapel become uncharacteristically testy during an operation and question mccoy on his method . well and she do become a doctor herself by the time of star trek the motion picture ( 1979 ) . in a way and the most fitting aspect about this be the last episode of the 1st season be that be give the only glimpse of kirk real family ( and it demise ) and outside the enterprise . it not much sam kirk only appearance be a a corpse and kirk sister in law dy soon after . meanwhile and kirk nephew remain unconscious the whole time . it would have be nice to see them reunite at the end instead of the now silly repartee on the bridge and a if kirk doesn not even remember his dead relative by this point ( contrast this with the superbly grim end of the city on the edge of forever ) . a mentioned and this be strictly alien invasion thrill and no more . spock end up with the best scene and exert vulcan control over the obviously intense pain he suffer . i believe this be the only time shatner play a character other than jim kirk or a kirk android or a kirk impostor during this series . even though the part be very brief and only a a corpse and he seem to put every actor effort into the part .