© 2026 The Couch Critic
Status
Released
Release
1977
Runtime
1h 37m
A human scientist capable of living underwater discovers similar alien life inhabiting human bodies, and looks to them for a clue to his origin.
18 Cast Members
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