The Curious Dr. Humpp (1969)
Overview
A doctor—on orders from a sentient brain—kidnaps intimate couples and takes them to his mansion as prisoners. He injects his subjects with a substance to 'enhance' their sexual abilities. The curious doctor then forces his hostages to have sex. While they are making love, he drains a fluid from them, which he needs to prevent himself from transforming into a monster.
Cast
Ricardo Bauleo
George
Gloria Prat
Rachel
Aldo Barbero
Dr. Humpp
Susana Beltrán
Nurse
Héctor Biuchet
Inspector Benedict
Emilio Vieyra
Pharmacist (uncredited)