A bride falls dead just as she is about to walk down the aisle to marry a wealthy groom, and Mac believes she may have been poisoned. In an abandoned Staten Island monastery rumored to be haunted, a severed human hand is found near a dead man who apparently chewed it off to free himself after being cuffed to a wall. The investigation reveals that the man was an ex-con and was digging for something just before he was chained to the wall and left for dead. Kelly Hu ("The Scorpion King") guest stars.