Barbara Cupisti

Erna

Pietro Genuardi

Paul

Lorenzo Majnoni

Manfred

Giacomo Rossi Stuart

Dr. Johns

Gaetano Russo

Maurizio

Andrea Damiano

Laura

Mario Luzzi

Theo

Paul Müller

The Monk

Umberto Lenzi

Director

Antonio Lucidi

Producer

Olga Pehar

Screenplay

Luigi Nannerini

Producer

Umberto Lenzi

Story

Umberto Lenzi

Writer

Sandro Mancori

Director of Photography

Piero Montanari

Original Music Composer

Vanio Amici

Editor

Dario Micheli

Production Design

Giovanni Corridori

Special Effects

Antonio Corridori

Special Effects