Alberto Closas as Simón Aldelbert

Amparo Soler Leal as Margarita

José Luis López Vázquez as Enrique Picart

Julia Gutiérrez Caba as Brigitte

Elena Balduque as Noemí

José Luis Pellicena as René

Hugo Pimentel as Dupont

Diana Lorys as Lulú

Pedro Porcel as Police Commissary Serbel

Jesús Puente as Serbel's Assistant

José Orjas as Medical Examiner

Jesús Guzmán as Medical Examiner's Assistant

Simón Ramírez as Narrator (voice)