In 1990, $300 million worth of paintings were stolen from Boston's Isabella Stewart Gardner Museum in what remains one of the greatest unsolved art thefts of the twentieth century. Now, nearly twenty years later, the case threatens to break wide open. Members of Boston's criminal underground are turning up dead. But these are no ordinary murders. The M.O. of the attacks suggests the involvement of someone trained by the IRA. But when Scott Finn learns that one of his clients, Devon Malley, was part of the heist, he's quickly drawn into the crossfire, and into the renewed hunt for the missing artwork - a hunt that may cost Finn and his colleagues their lives.