The groom in question is Tommy Giordano - and he's about to marry Steve Carella's sister, Angela. So the wedding party suddenly becomes a deadly game of hide-and-seek for Steve and the boys of the 87th Precinct. Tommy is it and Steve has only a few hours to find a killer and prevent Tommy from being tagged out for good. But how do you find a murderer with hundreds of wedding guests to choose from? Is it Tommy's best man, who would collect everything the groom owns if the killer finds his mark? Or Ben Darcy, who is still madly in love with the bride and would do anything to get her back? Or what about the crazy ex-GI who swore he'd get revenge against Tommy? Carella has to work fast, or someone is going to make Angela a widow on her wedding day...