Paul Naschy as Inspector Scaporella

María Kosty as Ingrid

Erika Blanc as Silvana Scaporella

Ángel Aranda as Pietro Volpini

Ricardo Merino as Edmundo

Susana Mayo as Claudia Volpini

Eduardo Calvo as Professor Sandro Campitelli

Mariano Vidal Molina as Police Commissioner

José Canalejas as Ruggero

María Vidal as Lucia - Prostitute victim

Ingrid Rabel as Giulia - Secretary

Frances O'Flynn as Marie - scrubwoman

Antonio Mayans as Cop

Ramón Centenero as

Beni Deus as

César Varona as

Anne Marie as

Juan Madrigal as

Juan Cazalilla as

Javier de Rivera as

Rafael Albaicín as

Luis Alonso as

Ernesto Vañes as