| Actor | David Warbeck (as Craig), Rossano Brazzi (as Dr. Sernich), Andrea Bosic (as Father Peter), Loris Loddi (as Father Davis), Rodolfo Ruzza, Andy Covella (as Deckhand On Ferry (uncredited)), Arthur Webber Jr. (as (uncredited)) |
| Actress | Christina Nagy (as Joanna), Carroll Blumenberg (as Ruth), Adriana Giuffrè, Daniela De Carolis |
| Assistant Camera | Paul Giles |
| Camera Operator | Ralph Chasse |
| Cinematographer | Gianlorenzo Battaglia |
| Color Consultant | Luciano Vittori |
| Costume Design | Valentina Di Palma |
| Director | Alberto De Martino |
| Distributor | Ascot Filmverleih (as (1986) (West Germany) (theatrical)), Delta (as (1985) (Italy) (theatrical)), Distribuzione Lanciamento Film (DLF) (as (1985) (Italy) (theatrical)) |
| Dubbing Editor | Nick Alexander |
| Film Editor | Vincenzo Tomassi |
| Furniture | Rancati |
| Hair Stylist | Maura Turchi |
| Make-up Artist | Franco Di Girolamo |
| Music | Francesco De Masi |
| Producer | Fabrizio De Angelis |
| Production Company | Fulvia Film |
| Production Designer | Antonio Visone |
| Props | Rodolfo Ruzza |
| Re-Recording Engineer | Bruno Moreal |
| Second Assistant Editor | Massimo Cataldo |
| Special Effects | Gino Vagniluca |
| Still Photographer | Antonio Benetti |
| Unit Production Manager | Fabrizio De Martino |
| Voice Dubbing: Carroll Blumenberg (English Version) | Pat Starke (as (uncredited)) |
| Voice Dubbing: Carroll Blumenberg (Italian Version) | Stefania Giacarelli (as (uncredited)) |
| Voice Dubbing: Christina Nagy (English Version) | Susan Spafford (as (uncredited)) |
| Voice Dubbing: Christina Nagy (Italian Version) | Serena Spaziani (as (uncredited)) |
| Voice Dubbing: David Warbeck (English Version) | Frank von Kuegelgen (as (uncredited)) |
| Voice Dubbing: David Warbeck (Italian Version) | Antonio Colonnello (as (uncredited)) |
| Wigs | Rocchetti e Carboni |
| Writer | Alberto De Martino, Vincenzo Mannino |
| Links | https://www.imdb.com/title/tt0086288/ · https://en.wikipedia.org/wiki/Formula_for_a_Murder · https://www.youtube.com/watch?v=4c0hkNwlstE |
