Exclusive Clip: Watch Mark Ruffalo In Acclaimed Crime Drama 'What Doesn't Kill You'

"What Doesn't Kill You" -- a gritty Boston crime drama based on the life of the film's writer/director Brian Goodman -- has been getting rave reviews at film festivals, and as of last Friday it's beginning to open in limited release.

In our exclusive clip, Brian (played by Mark Ruffalo) -- a man whose life of crime is beginning to spiral dangerously out of control -- is visited by a local police detective (Donnie Wahlberg, who also co-wrote the film). Check it out below.