Ηθοποιοί επεισοδίου
Γουίλιαμ ΣάτνερJames T. Kirk
Leonard NimoySpock
DeForest KelleyDr. McCoy
James DoohanScott
Τζορτζ ΤακέιSulu
Nichelle NicholsUhura
Marianna HillDr. Helen Noel
James GregoryDr. Tristan Adams
Eddie PaskeyLieutenant Leslie (uncredited)
Susanne WassonLethe
Morgan WoodwardDr. Simon van Gelder
Frank da VinciClifford Brent
Συντελεστές
Shimon WincelbergWriterVincent McEveetyDirectorGerald Perry FinnermanDirector of PhotographyRolland M. BrooksArt DirectionWalter M. JefferiesArt DirectionAlexander CourageMusicBruce SchoengarthEditorWilliam Ware TheissCostume DesignIrving A. FeinbergProperty MasterJoseph G. SorokinSound EditorFred B. PhillipsMakeup ArtistVirginia DarcyHairstylistJim RuggSpecial EffectsJoseph D'AgostaCastingJack F. LillySound MixerMarvin MarchSet Decoration