Full Credits
34 members

Bradford Dillman
Paul Grogan

Heather Menzies
Maggie McKeown

Kevin McCarthy
Dr. Robert Hoak

Keenan Wynn
Jack

Dick Miller
Buck Gardner

Barbara Steele
Dr. Mengers

Belinda Balaski
Betsy

Melody Thomas Scott
Laura Dickinson

Bruce Gordon
Colonel Waxman

Barry Brown
Trooper

Paul Bartel
Mr. Dumont
Shannon Collins
Suzie Grogan
Shawn Nelson
Whitney

Richard Deacon
Earl Lyon
Janie Squire
Barbara Randolph
Roger Richman
David
Bill Smillie
Jailer

Guich Koock
TV Pitchman
Jack Pauleson
Boy in Canoe
Eric Henshaw
Father in Canoe
Robert Vinson
Soldier
Virginia Dunnam
Girl
Diamond Farnsworth
Water-skier

Bruce Paul Barbour
Man in Boat
Robyn Ray
Screaming Woman
Mike Sullivan
Dam Guard
Jack Cardwell
Brandy
Sally Bondi
Swimming Deb (uncredited)

Eric Braeden
Dr. Robert Hoak (swimming double) (uncredited)

Joe Dante
Scuba Diver #2 (uncredited)

Amy Holden Jones
Hertz Clerk (uncredited)
Andrew G. La Marca
Scuba Diver #1 (uncredited)

John Sayles
Army Sentry (uncredited)

Phil Tippett
Scuba Diver (uncredited)
72 members
Joe Dante
Director
Charles H. Eglee
Assistant Director
Greg Gears
Assistant Director
Jeanne Rosenberg
Script Supervisor
Dick Lowry
Second Unit Director
John Sayles
Screenplay
John Sayles
Story
Richard Robinson
Story
Roger Corman
Executive Producer
Jon Davison
Producer
Chako Van Leeuwen
Co-Producer
Jeff Schechtman
Executive Producer
Hisako Tsukuba
Co-Producer
Tom Jacobson
Production Manager
Harry Wowchuk
Location Manager
Susan Arnold
Casting Director
Sharron Reynolds
Production Secretary
Ashley Stieglitz
Production Secretary
Ed Tarbutton
Production Assistant
Jeff Hoffman
Production Assistant
Michael Martin
Production Assistant
Jim Boni
Production Assistant
Robet Brown
Production Assistant
Tom Hammel
Production Manager
Jamie Anderson
Director of Photography
Ben Haller
Key Grip
Dana Christiaansen
Assistant Camera
Andrew G. La Marca
Assistant Camera
Chris Brightman
Grip
Bill Decker
Grip
O. C. Perkins
Still Photographer
Ted Boehler
Still Photographer
M. Todd Henry
Second Unit Director of Photography
Christopher Tufty
Assistant Camera
Clyde E. Bryan
Assistant Camera
Scott Buttfield
Grip
Moshe Levin
Grip
Pino Donaggio
Original Music Composer
Joel Goldsmith
Location Sound Mixer
Tony Santa Croce
Boom Operator
Richard Anderson
Sound Effects
Dave Yewdall
Sound Effects
Teresa Eckton
Sound Effects
Kendrick Sweet
Dialogue Editor
Valcie Yewdall
Foley
Robert Short
Special Props
Chris Walas
Special Props
Bill Mellin
Art Direction
Kerry Mellin
Art Direction
Jeff Ayers
Set Decoration
Kevin Hughes
Props
Kathleen Hughes
Props
Tim Doughten
Assistant Art Director
Rob Bottin
Special Effects Makeup Artist
Vincent Prentice
Special Effects Makeup Artist
Jack Buehler
Wardrobe Assistant
Dave Morton
Mechanical & Creature Designer
Phil Tippett
Creature Design
Doug Barnett
Mechanical & Creature Designer
Adam Beckett
Animation
Joe Dante
Editor
Mark Goldblatt
Editor
Brenda Balanda
Assistant Editor
Stacy Russo
Assistant Editor
Jon Berg
Special Effects
Conrad E. Palmisano
Stunt Coordinator
Roger Creed
Stunts
Nick Palmisano
Stunts
Bobby Sargent
Stunts
Jools Tippett
Special Effects Assistant
Jerome Seven
Special Effects Assistant
Michael Katz
Gaffer