In Miami, Florida, biker gang leader Edward "Diablo" Santer is about to be executed for murder when he proclaims his innocence and vows revenge from the grave. When a mysterious biker comes to town during Spring Break festivities, leaving several teenagers electrocuted to death, some begin to suspect that Santer has made good on his promise.
| Directing | James Justice | Director |
| Directing | Umberto Lenzi | Director |
| Writing | Umberto Lenzi | Story |
| Writing | Vittorio Rambaldi | Story |
| Writing | Umberto Lenzi | Screenplay |
| Writing | James Justice | Screenplay |
| Writing | James Justice | Story |
| Production | William J. Immerman | Producer |
| Production | Josi W. Konski | Producer |
| Production | Valerie Kenny Wolkoff | Associate Producer |
| Sound | Claudio Simonetti | Original Music Composer |
| Crew | Antonio Climati | Cinematography |
| Editing | John Rawson | Editor |
| Production | Billy DaMota | Casting Director |
| Production | Beverly McDermott | Casting Director |
| Art | Federico Padovan | Art Direction |
| Costume & Make-Up | Frank Cacciatori | Assistant Makeup Artist |
| Costume & Make-Up | Timothy Huizing | Makeup Artist |
| Costume & Make-Up | Mayte Nardo | Makeup Artist |
| Costume & Make-Up | Alex Rambaldi | Special Effects Makeup Artist |
| Costume & Make-Up | Vittorio Rambaldi | Special Effects Makeup Artist |
| Production | Thomas Sagone | Production Manager |
| Production | Luke Shortner | Unit Manager |
| Directing | Barry Simonson | Assistant Director |
| Art | Joseph Bearman | Property Master |
| Art | George Hackett | Painter |
| Art | Billy Murphy | Property Master |
| Art | Deborah Ristic | Storyboard Artist |
| Art | Julie Tyson | Set Dresser |
| Sound | Nick Alexander | Sound Editor |
| Sound | Dick Mayer | Sound Mixer |
| Sound | Al McGuire | Boom Operator |
| Crew | Gary F. Bentley | Special Effects |
| Visual Effects | Alex Rambaldi | Visual Effects |
| Crew | Jay Amor | Stunts |
| Lighting | David Hagerty | Best Boy Electric |
| Camera | Silvester Hammerman | Grip |
| Camera | Ascott Jones | Grip |
| Camera | Joey Kowalski | Camera Operator |
| Camera | Cyrus Mantakis | Still Photographer |
| Camera | Carlos Ortega | Assistant Camera |
| Lighting | Oren Slubowski | Gaffer |
| Camera | Myron Tameling | Key Grip |
| Production | Alan Berger | Casting Associate |
| Production | Lisa O'Connor | Additional Casting |
| Costume & Make-Up | Franco Carretti | Costumer |
| Costume & Make-Up | Leslie Herman | Set Costumer |
| Editing | Terry Arkwright | First Assistant Editor |
| Editing | Sylvia Brophy | Assistant Editor |
| Directing | Maria Stella Gallo | Continuity |
| Crew | Joseph Bearman | Driver |
| Crew | Taffy Reese | Transportation Captain |
| Production | Frank Bellito | Production Assistant |
| Production | Cynthia Carpenter | Producer's Assistant |
| Production | Daniel Del Calvo | Production Accountant |
| Crew | Andres Munoz | Craft Service |
| Crew | Umberto Lenzi | Technical Advisor |
