Shoot First Die Later (1974)

A policeman who has dealings with local crime begins to get in over his head. At first content with taking payments for helping contraband tobacco and alcohol escape notice of the authorities, he draws the line when the criminals get into the drug smuggling business. A local busybody has inadvertently witnessed the disposal of one of their victims and reported their license plates to the policeman's father, who is a sergeant. Gradually more people around him turn up dead and he becomes increasingly desperate.