chicago, illinois,philadelphia, pennsylvania,based on novel or book,hitman,war veteran,pennsylvania, usa,gangster,1970s,irish-american,male friendship,aging,family relationships,murder,organized crime,mafia,religion,detroit, michigan,sicilian mafia,nonlinear timeline,character study,labor union,1950s,1960s,mob family,jimmy hoffa,voiceover,father daughter relationship,criminal as protagonist,killer as protagonist