Interstate 84 (2000)

When a body is found floating in an upstate New York river, hard-drinking cop Joe Weldon is left with few clues. After uncovering the man's identity - an enigmatic simpleton named Hap - Weldon is led to the crooked hustler who took advantage of Hap and the disturbed, young punk who tormented him. A tale of personal demons, shattered lives, and ultimate redemption.