On a hot August night, Lt. Eve Dallas is called to a downtown club, where a joint bachelorette party full of love, friendship and laughter has taken a darker turn and ended in a crime scene. One of the brides has been garroted in a private room and lies dead in a pool of blood. The brutal murder scene was just seconds from the packed dance floor but despite the dozens of people present, useful witnesses prove hard to come by.

Someone must know something but no one is talking. On the surface the two brides had a supportive, tightknit group of friends but when Eve starts to dig below the surface she discovers that everything may not be quite as it seems....