Cuando acaba la noche (1964)

In a New York hospital, a man is cured of heroin addiction after a grueling three-month treatment. Although no longer an addict, he has complete amnesia: the only clues to his past are an expensive ring he was wearing when admitted, and a book of matches from a Puerto Rican nightclub. He pawns the ring and buys clandestine passage on a boat to Puerto Rico in search of his identity.

• Release Date: 1964-02-03
• Runtime: 1h 40min
• Production Company: Damian Rosa Film Producciones
• Production Country: Mexico, Puerto Rico
• Director: Julián Soler