Crimen imperfecto

Crimen imperfecto is a 1970 Spanish comedy film, directed and starred by Fernando Fernán Gómez, and co-starred by José Luis López Vázquez. They play two detectives, Salomón and Torcuato, who find themselves involved in a strange case of fund theft and murders. Several critics have noted that the main duo is inspired by the comic book characters Mort & Phil.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.