Kevin Weeks is a former mobster and was a longtime friend and confidant to James J. Bulger, the infamous boss of the Winter Hill Gang, a crime family based out of the Winter Hill neighborhood in Somerville, Massachusetts. Phyllis Karas is the coauthor of two previous books. She is a contributor to People magazine and an adjunct professor at the Boston University School of Journalism. She lives in Marblehead, Massachusetts, with her husband.