What Doesn't Kill You Everyone has a choice. Every choice has a consequence. Mark Ruffalo ... Brian Reilly Ethan Hawke ... Paulie McDougan Amanda Peet ... Stacy Reilly Will Lyman ... Sully Brian Goodman ... Pat Kelly Donnie Wahlberg ... Detective Moran Angela Featherstone ... Katie Edward Lynch ... Jackie (as Eddie Lynch) Michael Yebba ... Roundman Old Lady Brian Connolly ... Sean Nathaniel Smyth ... Mark (5 Years Old) Oscar Wahlberg ... Mark (10 Years Old) Thomas Regan ... Young Paulie Jean-Pierre Serret ... Young Brian George Khoury ...