With the week of their wedding finally upon them, Washington, D.C., Police Lieutenant Sam Holland and her fiancé, Senator Nick Cappuano, are at odds. In the aftermath of a tragic loss, they struggle to reconnect as the big day draws near, and their work keeps pulling them apart. When a new clue in a cold case surfaces, Nick asks Sam not to take any foolish chances before the wedding and to leave it alone for the time being. Sam agrees, but she can’t let it go entirely and winds up trapped in an explosive situation. Then an unwelcome visitor from her past threatens her future happiness. With trouble at every turn, will Sam survive long enough to walk down the aisle?