David Lynch, 1986. Severed ear opens a small-town nightmare. Frank Booth.
From Wikipedia
Blue Velvet is a 1986 American neo-noir mystery thriller film written and directed by David Lynch. The film stars Kyle MacLachlan, Isabella Rossellini, Dennis Hopper, and Laura Dern, and is named after the 1951 song of the same name. The film follows a college student (MacLachlan) who returns to his hometown and discovers a severed human ear in a field, which leads him to uncover a criminal conspiracy involving a troubled nightclub singer (Rossellini).