Roger Holloway

Lt. Lemli (uncredited)

John Winston

Lt. Kyle

Jan Shutan

Lt. Mira Romaine

Majel Barrett

Nurse Christine Chapel / Enterprise Computer (voice)

Barbara Babcock

Lights of Zetar (voice)

Frank da Vinci

Lt. Clifford Brent

Shari Lewis

Writer

Herbert Kenwith

Director

Al Francis

Director of Photography

William Ware Theiss

Costume Design

Alexander Courage

Music

Walter M. Jefferies

Art Direction

Donald R. Rode

Editor

John M. Dwyer

Set Decoration

Jeremy Tarcher

Writer

Fred B. Phillips

Makeup Artist

Jim Rugg

Special Effects

Irving A. Feinberg

Property Master

Joseph D'Agosta

Casting

Pat Westmore

Hairstylist

Doug Grindstaff

Sound Effects Editor

Carl Daniels

Production Sound Mixer

Gordon L. Day

Sound Mixer

Gene De Ruelle

Assistant Director