Probably the worst episode of the original Star Trek TV series, it is no surprise that NBC executives decided to pull the plug after viewing 'Whom Gods Destroy'. It is the second time that Kirk winds up trapped in a high-security mental institution (see 'Dagger of the Mind') and it is much less entertaining this time around. We see some of the worst acting of the series, for example:
Sulu: (excited) There's been an explosion on the planet!
Scotty: (not very incredulous) Point nine-five!
Bones: (bored) Must have wiped out everything!
It also features the thin third season incidental music and in general 'Whom Gods Destroy' is one of the few low points in the otherwise oustanding Star Trek television series. Don't waste an hour of your life on this one.