George Ardisson as Jeff Milton

Pascale Audret as Florence

Harald Leipnitz as Alan Shepperton

Horst Frank as Dr. Soarez

Christa Linder as Helen Remington

Luciana Angiolillo as Mrs. Violet Watson

Patrick Bernhard as Kidnapper

Sal Borgese as Second Kidnapper

María Julia Díaz as Dolores del Santos

Marion Grant as Gloria

Josep Castillo as Inspector Sabana

Andrés Pascual Valeriano as Randolf Remington