

| Directed by | ||
|---|---|---|
![]() | Joe Dante | |
| Starring | ||
|---|---|---|
| Bradford Dillman | Paul Grogan | |
| Heather Menzies-Urich | 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 | |
| Eric Braeden | Dr. Robert Hoak (swimming double) | |
| Joe Dante | Scuba Diver #2 | |
| Amy Holden Jones | Hertz Clerk | |
| R.C. Keene | Beach goer | |
| Andrew G. La Marca | Scuba Diver #1 | |
| John Sayles | Army Sentry | |
| Phil Tippett | Scuba Diver #3 (victim) | |





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