Blazing Magnum (aka Una Magnum Special Per Tony Saitta) (1976)

Set in Quebec, a ruthless cop (Stuart Whitman) who doesn't play by the rules goes after the murderer of his sister (Carole Laure). But as the case progresses, he soon learns that he didn't know his sister as well as he thought. Directed by Alberto De Martino (THE ANTICHRIST), this is a combination of two Italian subgenres, poliziotteschi and giallo. If DIRTY HARRY and PSYCHO had a baby, this movie would be it. Although it is an Italian film, it was filmed in Montreal and has American leads and Canadian supporting actors. Typical of the cop film, there's an abundance of chases, both in cars and on foot while giallo fans should be satisfied with the brutal killings. The movie's attitude toward homosexuals is so retro. A sequence with knife wielding karate kicking gay drag queens attacking Whitman would be hilarious if it weren't so offensive. In spite of the often chaotic messiness of the film, the murder mystery aspect of it is decent so I wasn't bored. With Martin Landau, John Saxon, Gayle Hunnicutt and Tisa Farrow.