Marihuana

Big Jim McLain is a 1952 political thriller film starring John Wayne and James Arness as HUAC investigators hunting down communists in the postwar Hawaii organized-labor scene. Edward Ludwig directed.

This was the first film in which Wayne played a contemporary law enforcement officer, instead of an Old West lawman. Near the end of his career, in the mid-1970s, he took on two more such roles, (Brannigan and McQ), each time playing an urban cop.