Held captive at an asylum for the Federation's few criminally insane, Kirk and Spock face a shapeshifting former starship captain who has taken over the facility and means to use his impersonation of Kirk to steal the Enterprise and conquer the galaxy.
Summary by Loreful, from public sources
Placement
- Star Trek Original TV Series Adaptations
- contained in Star Trek 5collection
- contained in The Classic Episodes 3collection
- contained in The Star Trek Reader IIIomnibus