La mujer ajena

Juan de Dios, a law student, is the son of Eloísa, a single mother who works hard as a seamstress to support her son. Through a classmate, Juan de Dios learns that he is the bastard son of Cecilio, a village cacique. He decides to go meet him, passing himself off as a bachelor and going to work at his father’s house, where he endures humiliation. Little by little, the affection between him and his cousin Lucía grows stronger.

Dr. Forti, obsessed with finding the cure for a mysterious disease, experiments on his patients, who die one by one as a result of his medical failures. Desperate, he embarks on an expedition to distant lands to study local medicine with his son Pablo, who then leaves his girlfriend Angélica. Eight years later, the doctor returns from his trip without his son, but with a strange companion who wears a pale mask.

Raul, a businessman with a loving wife and son, decides to go out drinking with some friends. At a bar, he meets a woman wearing a brooch that once belonged to his wife. She invites him back to her apartment, but her mobster boyfriend pays an unexpected visit. Raul ducks into her sister’s apartment across the hall—only to find himself involved in a murder when he discovers a corpse in his car.