This is a story that on the one hand can be hard to believe. On the other hand, it is a story that is easy to believe given the reputation of law enforcement of often breaking rules they are supposed to enforce and making deals with criminals of dubious value. Sure, taking down the Boston Mafia was a noble goal, but the FBI basically sold its soul to Bulger and enabled his own rise to control organized crime in Boston. Add to this a serious lack of accountability, the FBI's own internal corruption, and a parade of barely competent FBI supervisors, and you get a recipe for a disaster the FBI will be trying to amend for years to come.
Click the link to read my full review at The Itinerant Librarian. This review includes my thoughts on the film, which I watched shortly after having read the book.