The Two Faces of Fear

George Hilton

Dr. Roberto Carli

Fernando Rey

Inspector Nardi

Luciana Paluzzi

Elena Carli

Anita Strindberg

Dr. Paola Lombardi

Manuel Zarzo

Félix - Nardi's assistant

Luis Dávila

Dr. Michele Azzini

Eduardo Fajardo

Luisi

Antonio del Real

Dr. Michele Azzini

Carla Mancini

Teresa Guaida

Maria - Maid (as Teresa Guayda González)

Dinorah Ayala

Windshield wiper girl

Emilio Portela

Agent