The Infernal Trio
| The Infernal Trio | |
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Theatrical release poster  | |
| French | Le Trio infernal | 
| Directed by | Francis Girod | 
| Screenplay by | 
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| Based on | Le Trio infernal by Solange Fasquelle  | 
| Produced by | 
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| Starring | 
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| Cinematography | Andréas Winding | 
| Edited by | Claude Barrois | 
| Music by | Ennio Morricone | 
Production companies  | 
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Release dates  | 
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Running time  | 107 minutes | 
| Countries | 
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| Language | French | 
The Infernal Trio (French: Le Trio infernal; also known as Lady of Hell) is a 1974 crime comedy horror film directed by Francis Girod from a screenplay he co-wrote with Jacques Rouffio, based on the novel Le Trio infernal by Solange Fasquelle.