When Maureen Coyle, a suicidal nun who resembles Norman's former victim, Marion Crane, arrives at the motel, all bets are off and "Mother" is less than happy.
| Directing | Anthony Perkins | Director |
| Sound | Carter Burwell | Original Music Composer |
| Camera | Bruce Surtees | Director of Photography |
| Writing | Charles Edward Pogue | Screenplay |
| Production | Hilton A. Green | Producer |
| Editing | David E. Blewitt | Editor |
| Production | Nancy Nayor | Casting |
| Art | Henry Bumstead | Production Design |
| Crew | Michael Westmore | Makeup Effects |
| Costume & Make-Up | Vivian McAteer | Hairstylist |
| Costume & Make-Up | Marla Denise Schlom | Costume Design |
| Crew | Bob Yerkes | Stunt Coordinator |
| Camera | Michael Dugan | Underwater Camera |
| Art | Mickey S. Michaels | Set Decoration |
| Camera | Rick Neff | Camera Operator |
| Costume & Make-Up | Peter V. Saldutti | Costume Design |
| Sound | John Stacy | Supervising Sound Editor |
| Visual Effects | Syd Dutton | Visual Effects |
| Crew | Karl G. Miller | Special Effects |
| Production | Booker McClay | Publicist |
| Crew | Louis R. Cooper | Special Effects |
| Crew | Danny Lester | Special Effects |
| Camera | Christine M. Loss | Still Photographer |
| Costume & Make-Up | Liza Stewart | Set Costumer |
| Sound | Jeffrey Wilhoit | Foley |
| Sound | Michael C. Casper | Sound Re-Recording Mixer |
| Costume & Make-Up | Mark Reedall | Makeup Artist |
| Sound | John J. Stephens | Sound Re-Recording Mixer |
| Costume & Make-Up | Brian O'Dowd | Set Costumer |
| Directing | Betty A. Griffin | Script Supervisor |
| Sound | Roger Heman Jr. | Sound Re-Recording Mixer |
| Production | Don Zepfel | Associate Producer |
| Sound | James Thompson | Sound Recordist |
| Writing | Robert Bloch | Original Story |
