Characters played by Chuck Connors
Captain Ernie Slade
Characters played by Buddy Ebsen
Glenn Farlee
Characters played by Tammy Grimes
Mrs. Pinder
Characters played by Lynn Loring
Manya
Characters played by Jane Merrow
Sheila O'Neill
Characters played by France Nuyen
Annalik
Characters played by William Shatner
Paul Kovalik
Characters played by Roy Thinnes
Alan O'Neill
Characters played by Paul Winfield
Dr. Enkalla
Characters played by Will Hutchins
Steve Holcomb
Characters played by Darleen Carr
Margot
Characters played by Brenda Benet
Sally
Characters played by Russell Johnson
Jim Hawley
Characters played by H.M. Wynant
Frank Driscoll
Characters played by Mia Bendixsen
Jodi
Characters played by Gerald Peters
Tractor Loader
Characters played by Robert Donner
Dispatcher
Characters played by Peter Ashton
Clerk
Characters played by Veronica Anderson
2nd Clerk