From TV Guide: Maharajah Singh (Boris Karloff) kidnaps West for very unprincely reasons: West is to tutor Singh’s assassin sons in the ways of Western combat. West: Robert Conrad. Artemus:…

The Enterprise encounters a seemingly peaceful civilization run by a “”benevolent”” being named Landru…who intends for them to join his people.

Captain Kirk must find the cure to a deadly disease and put an end to another Starfleet captain’s cultural interference.