A human scientist capable of living underwater discovers similar alien life inhabiting human bodies, and looks to them for a clue to his origin.
Cast
Patrick Duffy
Mark Harris
Belinda Montgomery
Dr. Elizabeth Merrill
Kenneth Tigar
Dr. Miller Simon
Alan Fudge
C.W. Crawford
Tiffany Bolling
Lioa / Dilly
Annette Charles
Ginny Mendoza
Burr DeBenning
Xos / Chazz
Stanley Bennett Clay
Boy
Alan Mandell
Grant Stockwood
Hank Stohl
Sub Captain Wes
Russell Arms
Medical Examiner
Arch Archambault
Second Officer
Michael J. London
Air Lock Man
Vince Deadrick Sr.
Herb Wayland
Maurice Hill
Lou
Joel Lawrence
Hot Tub Manager
Maralyn Thoma
Myrtle
Dick Winslow
Fish Store Clerk
Crew
Marc Daniels
Director
Robert Lewin
Writer, Producer
Mayo Simon
Creator
Herbert F. Solow
Creator, Executive Producer
John Farrell
Editor
Gary Griffin
Editor
Héctor R. Figueroa
Director of Photography
Steve Siporin
Second Assistant Director
Bruce Hanson
Assistant Director
Wes McAfee
Assistant Director
Morris Chapnick
Casting Director
Fred B. Phillips
Makeup Artist
Fred Karlin
Music
Solomon Brewer
Set Decoration
Charles Pierce
Set Decoration
Robert M. Anderson
Property Master
Bob McLing
Property Master
Tracy Bousman
Art Direction
Robert H. Justman
Supervising Producer
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