A locked-room Christmas mystery where riddles reveal deadly family secrets… and the only escape is through the truth.Fans of Agatha Christie and Lucy Foley will savor its locked-room twists, interactive puzzles, and chilling emotional stakes. Play along, uncover the truth, and beware: at Endgame House, the most dangerous gift is buried in the past.Lily Armitage never wanted to return to Endgame House. The grand estate holds too many painful memories—including the unsolved murder of her mother, twenty-one Christmases ago.But when a cryptic invitation arrives, Lily can't ignore it. Her aunt has resurrected the family's infamous holiday tradition: twelve days of riddles, one each day until Twelfth Night. The prize? The keys to Endgame House—and a promise to reveal her mother's killer.Snowed in with her estranged, scheming cousins and a deadly game underway, Lily must confront the ghosts of her past, decipher riddles that cut to the bone, and survive a chilling race for the truth.Because a