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 entirelydifferent 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 onlyone thing: Callahan is the only one who can bring him in...alive.