Marshall Grauer

Dr. Kurt Leopold

Wade Popwell

The Monster

Paul Galloway

Sheriff Lou Krantz

Gerald Cruse

Marine Biologist Rex

Sanna Ringhaver

INPIT Agent Martha Walsh

Dave Dickerson

INPIT Agent Walker Stevens

Rich Valliere

Deputy Sheriff

Nancy Lien

Girl Camper

Russell Holcomb

Gloria Brady

Del Galloway

Hal Nearhoof

Jim Merrill

Elizabeth Barton

Girl on Porch

Jim Merrill

Boy on Porch

Bob Knowles

Carol Thompson

Jack Weatherford

Doug Thomas

Reporter