Frank Zito is een alleenwonende man van gemiddelde leeftijd. Hij woont in New York City en werkt als conciërge in een klein appartementencomplex. Wat niemand weet is dat Frank een schizofrene seriemoordenaar is, die iedere nacht vrouwen stalkt en ze vermoord. Hij scalpeert de hoofdhuid van hun hoofd af, en zet het thuis op poppen. Ook neemt hij hun kleding mee ter decoratie.
Nee, helaas is Maniac nog niet beschikbaar op Netflix in Nederland.
| Directing | William Lustig | Director |
| Production | William Lustig | Producer |
| Writing | Joe Spinell | Screenplay |
| Production | Joe Spinell | Executive Producer |
| Production | Judd Hamilton | Executive Producer |
| Production | Andrew W. Garroni | Producer |
| Sound | Jay Chattaway | Original Music Composer |
| Writing | C.A. Rosenberg | Screenplay |
| Writing | Joe Spinell | Story |
| Production | John Packard | Associate Producer |
| Camera | Robert Lindsay | Director of Photography |
| Editing | Larry Marinelli | Editor |
| Editing | James Proser | Assistant Editor |
| Editing | Irving Rathner | Negative Cutter |
| Art | Gary Martin | Property Master |
| Crew | Marla Schweppe | Scenic Artist |
| Art | Nick Ward | Property Master |
| Crew | Thomas Costabile | Carpenter |
| Crew | Richard Behrens | Carpenter |
| Sound | Erno Sephy | Sound Editor |
| Sound | Gary Rich | Sound Mixer |
| Sound | Sanford Rackow | Sound Effects |
| Sound | Clinton C. Elliot | Assistant Sound Editor |
| Costume & Make-Up | Candace Clements | Wardrobe Designer |
| Camera | Robert Lindsay | Camera Operator |
| Costume & Make-Up | Tom Savini | Special Effects Makeup Artist |
| Production | Andrew W. Garroni | Unit Production Manager |
| Crew | Rob Bottin | Makeup Effects |
| Directing | William Adams III | Second Assistant Director |
| Directing | Stephen Andrew | First Assistant Director |
| Directing | Nelia Bacmeister | Second Assistant Director |
| Sound | Rick Dior | Sound Re-Recording Mixer |
| Sound | George Schowerer | Dolby Consultant |
| Camera | Jim Canatta | Assistant Camera |
| Camera | Robert K. Feldmann | Key Grip |
| Camera | Steven Hirsch | Still Photographer |
| Lighting | Kevin Jones | Gaffer |
| Camera | Luke Walter | Second Assistant Camera |
| Camera | Bobbi Leigh Zito | Still Photographer |
| Directing | Deborah Ledendecker | Script Supervisor |
| Directing | Janine Stover | Script Supervisor |
| Production | Arthur Blum | Production Assistant |
| Production | Jim Harte | Production Assistant |
| Production | Janie Heath | Production Assistant |
| Production | Laura Little | Production Office Coordinator |
| Production | Jason Lustig | Production Assistant |
| Crew | Edward Perchaluk | Unit Publicist |
| Production | Jerry Sykes | Production Assistant |
| Production | Cecilia Verardi | Production Office Coordinator |
| Production | Debi Zimmerman | Production Coordinator |
| Crew | Tom Savini | Stunt Coordinator |
| Camera | Christine Forrest | Assistant Grip |
