Directed by
| Juan Ibáñez | ... | (as Juan Ibañez) |
| Jack Hill | ... | (US scenes) |
Writing Credits
| Jack Hill | ... | (writer) & |
| Luis Enrique Vergara | ... | (writer) (as L.E. Vergara C.) |
| Edgar Allan Poe | ... | (story) |
Cast (in credits order)
| Boris Karloff | ... | Matthias Morteval | |
| Julissa | ... | Lucy Durant | |
| Andrés García | ... | Charles Beasler (as Andres Garcia) | |
 |
José Ángel Espinosa 'Ferrusquilla' | ... | Ivor Morteval (as Ángel Espinoza 'Ferrusquilla') |
|
|
Beatriz Baz | ... | Cordelia Rash |
| Quintín Bulnes | ... | Dr. Emerick Horvath | |
|
|
Manuel Alvarado | ... | Morgenstern Morteval |
|
|
Carmen Velez | ||
|
|
Arturo Fernández | ... | Professor Frank |
|
|
Felipe de Flores | ||
|
|
Fernando Saucedo | ||
|
|
Estuardo Mora | ||
|
|
José Luis García de León | ... | (as José Luis G. de León) |
|
|
Víctor Jordán | ... | (as Victor Jordan) |
|
|
José Antonio Garcia | ||
Produced by
| Juan Ibáñez | ... | producer |
| Luis Enrique Vergara | ... | producer (as Luis Enrique Vergara C.) |
Music by
| Enrico C. Cabiati | ... | (as Enrico Cabiati) |
| Alicia Urreta | ... | (as Alice Uretta) |
Cinematography by
| Raúl Domínguez | ... | director of photography (as Raul Dominguez) |
| Austin McKinney | ||
Editing by
| Ángel Camacho | ... | (as Angel Camacho) |
Art Direction by
| José Méndez | ... | (as Jose Mendez) |
| Octavio Ocampo | ||
Set Decoration by
| Raúl Cárdenas | ... | (as Raul Cardenas) |
Costume Design by
| Vicente Tostado | ... | (as Tostado) |
Makeup Department
| María de Elena | ... | hair stylist (as Maria Elena) |
| Antonio Ramirez | ... | makeup artist (as Tony Ramirez) |
Production Management
| José Luis Cerrada | ... | production manager (as Jose Luis Cerrada) |
Second Unit Director or Assistant Director
| José Luis García de León | ... | assistant director (as José Luis G. de León) |
| Barry Langley | ... | assistant director |
Sound Department
| Guillermo Carrasco | ... | sound recordist |
| Heinrich Henkel | ... | sound re-recording (as Ing. Heinrich Henkel) / sound recordist (as Ing. Heinrich Henkel) |
| Víctor Rojo | ... | dialogue recordist (as Ing. Victor Rojo) |
| Ricardo Saldívar | ... | sound recordist (as Ricardo Saldivar) |
Special Effects by
| Enrique Gordillo | ... | special effects |
Camera and Electrical Department
| Ciro | ... | still photographer |
| Rubén Mendoza | ... | assistant camera (as Ruben Mendoza) |
| Eduardo Rojo | ... | camera operator |
Editorial Department
| Lilia Lupercio | ... | negative cutter |
Script and Continuity Department
| Miguel Garzon | ... | script supervisor (as Mike Garzon) |
Additional Crew
| Mike Garzon | ... | annotator (as Miguel Garzon) |
| Raul G. Manjarrez | ... | delegate: actors |
| Guillermo Olivera | ... | production co-ordinator (as Guillermo Olivera M.) |
| Stillman Segar | ... | dialogue director (as Stim Segar) |
| José Ángel de Juanes | ... | voice dubbing: Boris Karloff (uncredited) |
| Ana Ángeles García | ... | voice dubbing: Julissa (uncredited) |
| Enrique Jordá | ... | voice dubbing (uncredited) |
| José Padilla | ... | voice dubbing: Andrés García (uncredited) |
| Víctor Valverde | ... | voice dubbing: Quintín Bulnes (uncredited) |
| Carlos Ysbert | ... | voice dubbing: José Ángel Espinosa (uncredited) |
| Miguel Zúñiga | ... | voice dubbing: Arturo Fernández (uncredited) |
