Trailer
Cast
Barbara Steele
Dr. Mengers
Guich Koock
TV Pitchman
Phil Tippett
Scuba Diver (uncredited)
Bradford Dillman
Paul Grogan
Paul Bartel
Mr. Dumont
Amy Holden Jones
Hertz Clerk (uncredited)
Barry Brown
Trooper
Bruce Paul Barbour
Man in Boat
Kevin McCarthy
Dr. Robert Hoak
Dick Miller
Buck Gardner
Eric Braeden
Dr. Robert Hoak (swimming double) (uncredited)
Belinda Balaski
Betsy
Richard Deacon
Earl Lyon
Melody Thomas Scott
Laura Dickinson
Keenan Wynn
Jack
Bruce Gordon
Colonel Waxman
Joe Dante
Scuba Diver #2 (uncredited)
John Sayles
Army Sentry (uncredited)
Heather Menzies
Maggie McKeown