Captain Garth, the insane polymorph, takes over the penal planet where he
was being treated. He is a shape-changing psychopath on an insane asylum
planet which is protected by force field. He changes into an official of
the institute and also James Kirk in an attempt to get aboard the
Enterprise and escape from the planet. Kirk set up a code to be used
before transporting up, based on 3-D chess. Spock must choose which is the
imposter Kirk and stun him.
FACTS
Password is "Queen to queen's level three". The correct response is
"Queen to king's level one".
Kirk claims that there are an infinite number of responses to the chess
move (which is, of course, an incorrect statement).
Marta, the loopy Orion girl, is played by the actress that played
Batgirl in the Campy "Batman" TV series.
Andorian.
OPINIONS
Was there any reason why Spock couldn't have stunned both Kirks and
decided which was the imposter later? Other than this point, the episode
was quite enjoyable.
