Cast

Barbara Steele

Helen Karnstein / Mary Karnstein

George Ardisson

Baron Kurt Hummel

Halina Zalewska

Elizabeth Hummel / Adele Karnstein

Umberto Raho

Von Klage

Laura Nucci

Grumalda

Giuliano Raffaelli

Count Humboldt

Nello Pazzafini

Monk

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Jeffrey Darcey

The Messenger

Aldo Barozzi

Plague Victim (uncredited)

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Mario Casella

Gorca (uncredited)

Crew

Antonio Margheriti

Director (Directing)

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John Tamblyn

Sound (Sound)

Antonio Margheriti

Screenplay (Writing)

Tonino Valerii

Screenplay (Writing)

Ernesto Gastaldi

Story (Writing)

Tonino Valerii

Dialogue (Writing)

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Felice Testa Gay

Producer (Production)

Carlo Rustichelli

Original Music Composer (Sound)

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Riccardo Pallottini

Director of Photography (Camera)

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Mario Serandrei

Editor (Editing)