Question: I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable".  Plot title: Kronos Movie plot: The title and credits are in white font over a black background. We open with a saucer shaped spacecraft drifting across a star filled sky. It stops and hovers, ejects a small sphere which heads to Earth. On a lonely highway at night a truck approaches. The driver, McCrary (Kenneth Alton) smokes and whistles to a tune playing on the radio. Suddenly his radio experiences interference, all of the truck instruments malfunction, and the truck engine quits. He exits the vehicle to check the engine. The sphere loitering nearby transforms into light and electrical energy and possesses McCrary. He gets back in his truck and drives to Lab Central, a government installation. A guard prevents his entrance. McCrary tells the guard he is lost. Distracting the guard, McCrary knocks the guard out with a monkey wrench. He walks into the main building and enters the office of Dr. Hubbell Eliot. Dr. Eliot (John Emery) challenges him asking, "Who are you? What are you doing here? You have no business here. How did you get past the guard?" McCrary never answers, but the light that possessed him is transferred to Dr. Eliot. McCrary falls to the floor. The injured guard and a maintenance man enter Eliot's office to check on the director. The two men carry McCrary's dead body out of the director's office.Dr. Arnold Culver (George O'Hanlon) enters the computer lab and retrieves an orbital calculation SUZIE completed. He thanks the machine and departs his lab to see Dr. Leslie Gaskell (Jeff Morrow). Gaskell shows Culver Asteroid M47 on a viewing plate connected to the observatory telescope. Eliot behaves strangely, as does the M47 asteroid. Culver explains it as an orbital perturbation. Gaskell directs the machinery to take photo exposures, and then requests that they be developed. Gaskell's date for the evening, Vera Hunter (Barbara Lawrence) is also an employee of the lab. She works in the dark room. Dr. Eliot lets himself into the Insulation Chamber. Gaskell and Culver enter the dark room and review photo plates of M47.Culver... My question: Who does the scientist say sent Kronos?
Answer:
Aliens