The People Who Own the Dark

Nadiuska

Clara

Alberto de Mendoza

Prof. Fulton

Teresa Gimpera

Berta

Emiliano Redondo

Dr. Messier

Julia Saly

Marion (as Julia Sali 'La Pocha')

Tomás Picó

Victor

Diana Polakov

Tania

Antonio Mayans

Vasily

Leona Devine

Luna

Ricardo Palacios

Dr. Robertson

Carmen Platero

Greta

Estela Delgado

Barta Barri

Russian Ambassador (as Barta Barry)

Gumersindo Andrés

- (as Gumersindo A. López)

Gonzalo Tejada

Adolfo Thous

Maria Perschy

Lily

Paul Naschy

Boune