The Bloody Brood

The Bloody Brood is a 1959 Canadian thriller film directed by Julian Roffman.
Premise.
A man begins to investigate on his own the death of his brother, who died from eating a hamburger laced with ground glass. With the police case stalled because of ineptness, the man's own investigation leads him toward a beatnik hang-out frequented by Nico (Peter Falk), a shady character who supplies drugs to the patrons and philosophizes about the ills of the world.
Reception.
Author and film critic Leonard Maltin awarded the film two out of four stars, calling it "[A] laughable, thoroughly cynical depiction of the Beat Generation."