Hallucinations of a Deranged Mind

Hallucinations of a Deranged Mind Portuguese Delrios de um Anormal is a 1978 Brazilian horror film directed by Jos Mojica Marins. Marins is also known by his alter ego Z do Caixo in English, Coffin Joe. The film features Coffin Joe as the central character, although it is not part of the Coffin Joe trilogy.

The story is built around Dr.Hamlton, a psychiatrist who is terrorized by nightmares in which Coffin Joe tries to steal his wife. His colleagues decide to seek medical help with the assistance of filmmaker Jose Mojica Marins appearing as himself, who tries to reassure Dr. Hamlton that Coffin Joe is merely a creation of his mind.

Source: Wikipedia