Released:
1977-04-22

Overview:
A human scientist capable of living underwater discovers similar alien life inhabiting human bodies, and looks to them for a clue to his origin.

Director:
Marc Daniels

Runtime:
1h 37min

Genre:
TV Movie, Science Fiction

• Cast:
• 
  Patrick Duffy
  as
  Mark Harris
• 
  Belinda Montgomery
  as
  Dr. Elizabeth Merrill
• 
  Kenneth Tigar
  as
  Dr. Miller Simon
• 
  Alan Fudge
  as
  C.W. Crawford
• 
  Tiffany Bolling
  as
  Lioa / Dilly