All Cast
Robert Foxworth
Questor
Mike Farrell
Jerry Robinson
John Vernon
Geoffrey Darro
Lew Ayres
Vaslovik
James Shigeta
Dr. Chen
Robert Douglas
Dr. Michaels
Dana Wynter
Lady Helena Trimble
Ellen Weston
Allison Sample
Majel Barrett
Dr. Bradley
Reuben Singer
Dr. Gorlov
Walter Koenig
Administrative Assistant
Fred Sadoff
Dr. Audret
Gerald Peters
Randolph
Eyde Girard
Stewardess
Alan Caillou
Immigration Offical
Lal Baum
Col. Hendricks
Patti Cubbison
Secretary
