How could it possibly happen? When a convicted murderer, Billy O'Brien, serving two consecutive life sentences, is suddenly released from a maximum security prison due to a clerical error, a massive man-hunt ensues. Not only are the BPD and Massachusetts State Police trying to fi nd the escaped convict - but so are the FBI and the CIA - and the Mob - each for entirely different reasons. Chris Callahan is a retired Boston homicide detective, who also happens to be O'Brien's childhood friend...and the officer who put him behind bars. The entire law enforcement community agrees on only one thing: Callahan is the only one who can bring him in...alive.