The crew of the Enterprise arrive at the planet EXO-III with some trepidation and great anticipation. They are there to see if hey can locate the renowned scientist Dr. Roger Korby. The man hasn't been heard of for 5 years and the general belief is that he is dead. For Nurse Christine Chapel however, a reunion with Corby will be a reunion with her fiancé. They find Korby alive but when Kirk and Chapel beam down to the planet, they find a man obsessed who is using alien technology to reproduce the humans around him in the form of androids. Written by
Did You Know?
In Robert Bloch's original script, a wealthy socialite named Margo hired the Enterprise to look for Doctor Korby, whom she greatly admired. In his script re-writes, Gene Roddenberry felt the role would be better filled by Korby's wife or fiancé, which would play well with the doctor's alleged intimate relationship with Andrea and his emotional coldness. Finally, he wrote the part to feature Christine Chapel, who was previously featured in "The Naked Time" (and was played by Roddenberry's lover, Majel Barrett). See more
When Kirk pulls the stalactite from the roof, it does not snap like limestone. Instead, it bends the way that only polystyrene can. See more
Dr. Roger Korby
You might as well try to outthink a calculating machine.
Captain James T. Kirk
Obviously I can't.
Edited from Star Trek: The Man Trap