Carlos Otero

After a jewel robbery goes horribly wrong and their leader, Jack (Naschy), is shot in the head, a band of thieves goes to a local doctor for help. To save their friend's life, the criminals devise a unique solution: kill their psychopathic worst enemy, toss his body onto a railroad track in front of an oncoming train, and use the severed head for a brain transplant! Unfortunately the unwilling donor, the Sadist, turns Jack into a raging lunatic bent on murder and destruction (Image Entertainment)

Former Countess Clair and Professor Gruber conduct occult research in castle basement of Count Victor, re-animating people to kill for them. (imdb)

A giallo film. Hills plays a young woman whose boyfriend disappears (we apparently see him killed in the opening scene). She has to rent out a room in her flat to a creepy tenant. She then gets a call from her missing boyfriend luring her to an abandoned airport hanger where she is nearly shot. She returns to find the creepy tenant has apparently committed suicide. But then she finds out he was an impostor when the real tenant shows up. And what's up with her boyfriend? Is he alive or dead? (imdb)

Four horror stories.

In a village in Costa Brava, a mason starts his workday; in a village in Andalusia, a woman and her two sons start the voyage to meet him. After some time alone, the man has an affair with a tourist, which reveals an unsuspected world to him.

The portrait of an amateur boxer who falls into the hands of a cruel manager while turning professional.

Miguel, a quick-tempered sailor, is fired from his job and hardly finds another one to support his family as a harbor depot watchman. Unsatisfied, he will plan a robbery. (imdb)