| Cast list | | Robert Forster | as | Paul Corwin/Clone | | Adrienne Barbeau | as | Margaret Corwin | | Ray Milland | as | Prof. Meredith | | David Sheiner | as | Prof. Hillstrom | | John Lehne | as | Lt. Merholz | | Denise DuBarry | as | Ann Sweeney | | Jack De Mave | as | Roger | | Thomas Bellin | as | Ed Linnick | | Heather Hobbs | as | Jenny | | Eddie Quillan | as | Watchman | | Raye Sheffield | as | Clone | | Russell Shannon | as | Guard | | Jim Nolan | as | Dr. Tapler | | Madeleine Shaner | as | Audrey Linnick | | Johnny Hock | as | 1st Skater |
| | Crew list: | | Gus Trikonis (Director) | | Al Ramrus (Writer) | | John Herman Shaner (Writer) |
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