REGULAR CAST:

William Shatner as Captain James T. Kirk
Leonard Nimoy as Spock
DeForest Kelley as Dr. Leonard H. McCoy
James Doohan as Chief Engineer Montgomery 'Scotty' Scott
George Takei as Lieutenant Hikaru Sulu
Nichelle Nichols as Lieutenant Uhura
Majel Barrett as Nurse Christine Chapel

GUEST CAST:

John Crawford as Commissioner Ferris
Phyllis Douglas as Yeoman Mears
Robert 'Big Buck' Maffei as Creature
Peter Marko as Lieutenant Gaetano
Don Marshall as Lt. Boma
Eddie Paskey as Lt. Leslie (uncredited)
Rees Vaughn as Latimer
Grant Woods as Kelowitz

PRODUCTION:

Teleplay by: Oliver Crawford, S. Bar-David
Story by: Oliver Crawford
Directed by: Robert Gist