The Mad Dog Killer
La belva col mitra (original)
Un joven y muy cruel gangster escapa de la cárcel para vengarse de los culpables de su encierro.
Starring Helmut Berger, Marisa Mell, Richard Harrison, Marina Giordana, Luigi Bonos, Vittorio Duse, Claudio Gora, Alberto Squillante, Nello Pazzafini, Antonio Basile
It's a crime and thriller movie, and has a rating of 6 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Spain.