| Actor | Paul Naschy (as Waldemar Daninsky), Andrés Resino (as Inspector Marcel), José Marco (as Pierre), Barta Barri (as Muller), Luis Gaspar (as Distraught Man), Julio Peña (as Dr. Hartwig, The Coroner), Ruperto Ares, Eduardo Chappa (as Tramp / Monster ( Uncredited )), Carlos Aured (as The Shadow Of Satan ( Uncredited )) |
| Actress | Gaby Fuchs (as Elvira), Barbara Capell (as Genevieve Bennett), Patty Shepard (as Countess Wandesa Dárvula de Nadasdy), Yelena Samarina (as Elizabeth Daninsky), Betsabé Ruiz (as Pierre's Girl), María Luisa Tovar (as First Female Victim) |
| Assistant | Carlos Aured (as Assistant Director) |
| Creator | Mercedes de Segovia (as Costume Designer), José Luis Morales (as Make-up), Antonio Molina (as Special Effects) |
| Director | León Klimovsky |
| Director Of Photography | Leopoldo Villaseñor |
| Distributor | Hispamex Films, S.A. (as (1971 Theatrical (Spain))) |
| Film Editor | Antonio Gimeno |
| Music | Antón García Abril |
| Producer | Salvadore Romero |
| Production Company | Plata Films S.A., HIFI Stereo 70 Kg |
| Production Designer | Ludwig Orny |
| Screenplay | Paul Naschy, Hans Munkel |
| Sound | José María San Mateo |
| Links | https://www.imdb.com/title/tt0066160/ |
