Matroni et moi (1999)

While vacationing in Maine, Ph.D. candidate Gilles runs into working-class Guylaine, and the couple hit it off. Returning to his native Quebec, Gilles begins frequenting the bar where Guylaine works, meeting her brother Bob. Bob makes a living working for local mafia boss Matroni. When Bob shows up one night, badly beaten, Gilles offers to help intervene by delivering a letter to Matroni on Bob's behalf. But things with Matroni only get worse when Gilles decides to read the letter before he delivers it.