演职人员
Questor
罗伯特·福克沃斯
Jerry Robinson
Mike Farrell
Geoffrey Darro
约翰·弗农
Vaslovik
Lew Ayres
Dr. Chen
詹姆斯繁田
Dr. Michaels
Robert Douglas
Lady Helena Trimble
达娜·温特
Allison Sample
Ellen Weston
Dr. Bradley
Majel Barrett
Dr. Gorlov
Reuben Singer
Administrative Assistant
沃尔特·柯尼希
Dr. Audret
Fred Sadoff
Randolph
Gerald Peters
Stewardess
Eyde Girard
Immigration Offical
Alan Caillou
Col. Hendricks
Lal Baum
Secretary
Patti Cubbison
Charlie
伊安·艾伯克龙比