A man inadvertently gets caught near a car explosion, and after he recovers from his injuries realizes that he has amnesia. Soon evidence begins to mount that he could be "The Claw Hammer Killer, " a serial murderer who targets for death the former patrons of a particular restaurant called Puzzles.
| Actor | Role |
|---|---|
 Robert UrichAllan Strong | Allan Strong |
 Kay LenzKaren Hicks | Karen Hicks |
 Jim MetzlerKevin Carlisle | Kevin Carlisle |
 Richard MonetteStuart Kessler | Stuart Kessler |
 Michael IronsideDet. Carl Madsen | Det. Carl Madsen |
| GGeoffrey BowesYoung Doctor | Young Doctor |
| BBarbara RadeckiHostess | Hostess |
 Christine MitgesJean Montgomery | Jean Montgomery |