"Female prisoners endure the horrors of drug abuse, prostitution and rampant sadism at an island prison. When an escape attempt goes awry, the fugitives discover that escaping can be as dangerous as remaining in the prison."
Maria Schell
as Leonie Caroll
Herbert Lom
as Governor Santos
Mercedes McCambridge
as Thelma Diaz
Luciana Paluzzi
as Natalie Mendoza
Maria Rohm
as Marie
Rosalba Neri
as Zoe
Elisa Montés
as Helga
Valentina Godoy
as Rosalie
José María Blanco
as Doctor (uncredited)
Mike Brendel
as Boatman (uncredited)
Jesús Franco
as Official (uncredited)
Claudia Gravy
as Zoe's boss (uncredited)
Ana Lucarella
as Marta (uncredited)
Olívia Pineschi
as (uncredited)
Juan Antonio Riquelme
as Juan Diego (uncredited)
María Vico
Elsa Zabala
Javier Peres Grober
Screenplay
Harry Alan Towers
Anya Corvin
Dialogue
Carlo Fadda
Story
Manfred R. Köhler
Milo G. Cuccia
Ornella Zanelli
Bruno Nicolai
Original Music Composer
Music
Producer
Manuel Merino
Director of Photography
Director
Bruno Mattei
Editor
Santiago Ontañón
Art Direction
Adolfo Ponte
Makeup Artist