Directed by
| Miguel Madrid | ... | (as Michael Skaife) |
Writing Credits (in alphabetical order)
| Miguel Madrid | ... | (screenplay) (as Michael Skaife) |
| Miguel Madrid | ... | (story) |
Cast (in credits order)
 |
Bill Curran | ... | Michael Sherrington |
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Catherine Ellison | ... | Lady Anne (as Catharine Ellison) |
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John Clark | ... | Sir Robert |
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María Paz Madrid | ... | Barbara (as Yocasta Grey) |
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Marisa Shiero | ... | Pamela |
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Titania Clement | ... | Lilith |
| Frank Braña | ... | Dr. Lexter | |
| Víctor Israel | ... | Mr. Fowles | |
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Beatriz Elorrieta | ... | Margaret (as Beatriz Lacy) |
| Rest of cast listed alphabetically: | |||
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J.R. Clarke | ... | Inspector Harrison |
| Antonio Jiménez Escribano | ... | Dr. Kinberg | |
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Inés Morales | ... | Elizabeth (as Senny Green) |
| Rosario Royo | ... | Señora en tren - Lady on Train | |
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José Ángel de Juanes | ... | Sir Robert (voice) (uncredited) |
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Miguel Madrid | ... | Mr. Skaife (uncredited) |
Produced by
| Tony Recoder | ... | producer |
Music by
| Alfonso Santisteban | ... | (as A. Santisteban) |
Cinematography by
| Alfonso Nieva | ... | (as A. Nieva) |
Editing by
| María Luisa Soriano | ||
Production Management
| Antonio Recoder | ... | production manager |
Special Effects by
| Medina | ... | special effects |
| Antonio Molina | ... | special effects |
Additional Crew
| Francisco Arenzana | ... | voice dubbing: Victor Israel (uncredited) |
| Salvador Arias | ... | voice dubbing: Antonio Jiménez Escribano (uncredited) |
| Lola Cervantes | ... | voice dubbing: Catherine Ellison (uncredited) |
| Matilde Conesa | ... | voice dubbing: María Paz Madrid (uncredited) |
| José María Cordero | ... | voice dubbing: J.R. Clarke (uncredited) |
| José Ángel de Juanes | ... | voice dubbing: John Clark and Miguel Madrid (uncredited) |
| José Guardiola | ... | voice dubbing: Frank Braña (uncredited) |
| Delia Luna | ... | voice dubbing: Inés Morales (uncredited) |
| José Martínez Blanco | ... | voice dubbing: Bill Curran (uncredited) |
| José Moratalla | ... | voice dubbing (uncredited) |
| María Luisa Rubio | ... | voice dubbing: Titania Clement (uncredited) |
| Mayte Santamarina | ... | voice dubbing: Marisa Shiero (uncredited) |
| Selica Torcal | ... | voice dubbing: Beatriz Elorrieta (uncredited) |
