John Connolly and James "Whitey" Bulger grew up together on the tough streets of South Boston. Decades later in the mid-1970s, they met again. By then, Connolly was a major figure in the FBI's Boston office and Whitey had become godfather of the Irish Mob. Connolly had an idea, a scheme that might bring Bugler into the FBI fold and John Connolly into the Bureau's big leagues. But Bulger had other plans. Soon to be a major motion picture starring Johnny Depp as Whitey Bulger, Black Mass is the chilling true story of what happened between them - a dark deal that spiraled out of control, leading to drug dealing, racketeering, and murder.

When the FBI turned an Irish mobster into an informant, they corrupted the entire judicial system and sanctioned the worst crime spree Boston has ever seen. This is the true story behind the major motion picture.

James "Whitey" Bulger became one of the most ruthless gangsters in US history, and all because of an unholy deal he made with a childhood friend. John Connolly a rising star in the Boston FBI office, offered Bulger protection in return for helping the Feds eliminate Boston's Italian mafia. But no one offered Boston protection from Whitey Bulger, who, in a blizzard of gangland killings, took over the city's drug trade. Whitey's deal with Connolly's FBI spiraled out of control to become the biggest informant scandal in FBI history.

Black Mass is a New York Times and Boston Globe bestseller, written by two former reporters who were on the case from the beginning. It is an epic story of violence, double-cross, and corruption at the center of which are the black hearts of two old friends whose lives unfolded in the darkness of permanent midnight. [from Amazon.com]