Eugenio Martín

While on the Trans-Siberian Express, an anthropologist and his rival must contain the threat posed by the former's cargo: a prehistoric ape which is the host for a parasitic life-form.

Two sisters running a small hotel in Spain kill female tourists whose morals do not meet their strict religious standards.

Robber Roy King loses his wife, Alicia, to revolutionary Montero. Despite their rivalry they collaborate in an attempt to rob the Mexican government of one million dollars.

An escapee Mexican outlaw returns to his hometown, where he is sheltered from a tenacious bounty killer by the townspeople - who discover too late that he is a changed man.

A wealthy Englishman finds his third wife dead. After the police discover that his first two wives had also died suddenly, an investigation is launched. Meanwhile, a new neighbor moves in and becomes very interested in Arthur.