Twelve clues. Twelve keys. Twelve days of Christmas. But how many will die before the twelfth night?
Lily never intended to go back to Endgame House. But after her favorite aunt's death, she reluctantly returns to compete with her estranged cousins in the annual Christmas game for the deed to the house. She wouldn't be here at all, but the clues of the game hold the answer to another mystery that Lily is determined to solve: who killed her mother twenty years ago?
But not everyone is playing fair at Endgame, and a darkness lies beneath the sparkling decorations. The snow is thick, the phone lines are down, and no one is getting in or out. It soon becomes clear that Lily is fighting for not just an inheritance, but her life. Let the games begin.