A young woman feigns illness in order to infiltrate a mental hospital, where she investigates the disappearance of her sister, a former patient. Meanwhile, the hospital warden and her attendants abuse and torture their charges, forcing them to star in cheap skinflicks.

Dyanne Thorne
as Greta

Tania Busselier
as Abbie Phillips

Lina Romay
as Juana

Eric Falk
as Pablo Rego

Angela Ritschard
as Rosa Phillips

Howard Maurer
as Governor

Esther Studer
as No. 24

Peggy Markoff
as No. 14

Esther Moser
as No. 18

Jesús Franco
as Dr. Milton Arcos (as Jess Franco)