90 minutos
Doctor Beiral, torn apart by the internal struggle between his social persona and the dark instincts that torment him, manages to use his investigations to give life to the monster that he has long held within him.
François-Eric Gendron
Dr. Octavio Beiral
Amparo Larrañaga
Florence
Jean-Claude Adelin
The Other/Mr. Shadow
Elena Bagutta
Mary (as Elena Fernández)
Fernando Hilbeck
Dr. Beiral's Father
Luis G. Gámez
Poole
Ernesto Alterio
Juan
Berta Casals
Prostituta
Jaime Domínguez
José Antonio Lobato
Inspector de policía (as Jose A. Lobato)
Isabel Pevida
Alfonso Del Olmo
Ignacio Salazar-Simpson
Alumno en mesa de operaciones
Carmen Gallo
Nicolás Muller
Maria Luisa Requeta
María del Carmen Cueto
