Jack Nicholson’s character Frank Costello was not based on a mobster of the same name. Costello was instead inspired by James "Whitey" Bulger, the infamous Boston mob boss who occasionally spied for the FBI. After learning of his impending arrest, Bulger fled from Massachusetts in 1994, eluding authorities for decades. He was finally captured by police in Santa Monica, California in 2011 and remains in jail today. —Xfinity Entertainment Staff
(Photos: Warner Bros./AP Photo, FBI Handout/AP)The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.