Elizabeth is kidnapped, one of dozens of scientists held prisoner on the island of Felicitos, controlled by special mineral springs that render their victims completely happy and compliant. Dr. Smith is using them to build a rocket to take her away from our troubled planet in search of some better world, and Mark must find a way to counter the brain-washing and free the captives.
Cast
Patrick Duffy
Mark Harris
Belinda Montgomery
Dr. Elizabeth Merrill
Kenneth Tigar
Dr. Miller Simon
Alan Fudge
C.W. Crawford
Darleen Carr
Dr. Mary Smith
Dennis Redfield
Dick Stoneman
Pamela Peters Solow
Jane
Fred Beir
Captain Bracy
Paul Mantee
FBI Agent Fuller
Michael J. London
Cetacean Crewman
Arthur Batanides
Police Detective
Rick Goldman
Security Guard at Dock
Bob Minor
Minion
Ric Drasin
Minion
Frank Martone
Minion
James Faracci
Minion
Jim Morris
Minion
Ernie Hudson
Minion
Tony Pearson
Minion
Julius LeFlore
Minion
Jim Tarleton
Minion
Crew
Charles S. Dubin
Director
Jerry Sohl
Writer
Luther Murdoch
Writer
Mayo Simon
Creator
Herbert F. Solow
Creator, Producer
John Farrell
Editor
Gary Griffin
Editor
Michael Renaud
Editor
Héctor R. Figueroa
Director of Photography
Steve Siporin
Second Assistant Director
Hal Galli
Assistant Director
George J. Light
Assistant Director
Bobbie Getzler
Associate Producer
Gary Shaffer
Casting Director
Fred B. Phillips
Makeup Artist
Fred Karlin
Music
Solomon Brewer
Set Decoration
Sal Sommatino
Property Master
Bob McLing
Property Master
Tracy Bousman
Art Direction
