At the site of the 1969 rock concert at Woodstock, New York, an electrical charge turns a local farmer into a murderous werewolf.
| Actor | Role |
|---|---|
 Michael ParksMoody | Moody |
 Harold J. StoneLt. Martino | Lt. Martino |
 Meredith MacRaeKendy | Kendy |
 Ann DoranDora | Dora |
 Richard WebbDr. Marlow | Dr. Marlow |
 Belinda BalaskiBeckie | Beckie |
 Tige AndrewsBert / The Werewolf | Bert / The Werewolf |
 Robert DixOfficer Best (as Bob Dix) | Officer Best (as Bob Dix) |
 Andrew StevensDave | Dave |
| BBobby ClarkOfficer London | Officer London |
| RRobert WeaverTom | Tom |
| DDanny Michael MannVinnie | Vinnie |
| FFloyd CarverFirst Officer | First Officer |
| GGary JohnsonSecond Officer | Second Officer |
| JJohn O'ConnellServiceman | Serviceman |
| DDean WebberNewsman | Newsman |