A Bucket of Blood (1959)

Walter Paisley, a dimwitted busboy at a Bohemian café, becomes a sensation in the art world when he accidentally kills his landlady's cat and covers it with clay, creating a lifelike sculpture. Encouraged by his newfound success, Walter continues his murderous spree to create more sculptures, ultimately attracting the attention of the police. As the pressure mounts, Walter's art becomes increasingly gruesome, leading to a chilling climax.