“Knox Goes Away” (**1/2 out of four) was an uneven but undeniably touching story of an aging hitman (Michael Keaton who also directed) who learns he has severe progressive dementia and has only weeks to live and has to put his affairs together while evading the police and attempting to repair a relationship with his estranged son (James Marsden). Keaton is terrific as usual and also shows good touches as a director but film has too many half-baked subplots that undercut it from fully connecting. Suzy Nakamura is strong as lead detective who’s on Keaton’s trail.