But her aunt makes one more promise: The clues will also reveal who really killed Lily's mother all those years ago. So, for the twelve days of Christmas, Lily must stay at Endgame House with her estranged cousins and unravel the riddles that hold the key not just to the family home, but to its dark...

But her aunt makes one more promise: The clues will also reveal who really killed Lily's mother all those years ago. So, for the twelve days of Christmas, Lily must stay at Endgame House with her estranged cousins and unravel the riddles that hold the key not just to the family home, but to its darkest secrets.