Bradford Dillman
Paul Grogan
An insurance investigator and her local guide search the Lost River Lake area to find two missing teenagers. When stumbling on an abandoned military facility, they release by accident in the river some flesh-eating piranhas that were bred to use in the Vietnam war. The piranhas are heading straight to a nearby summer resort's lake and its guests.
Paul Grogan
Maggie McKeown
Dr. Robert Hoak
Jack
Buck Gardner
Dr. Mengers
Betsy
Laura Dickinson
Colonel Waxman
Trooper
Mr. Dumont
Suzie Grogan
Whitney
Earl Lyon
Barbara Randolph
David
Jailer
TV Pitchman
Boy in Canoe
Father in Canoe
Director
