Set in a parallel universe where mistletoe possesses mystical properties, this alternative history mystery book follows Detective Emily Thompson as she investigates a series of bizarre murders that occur only during the Christmas season. With each victim found under a sprig of mistletoe, Emily must uncover the ancient secrets surrounding this festive plant to catch the elusive killer. As the body count rises, she races against time to solve the mistletoe murders and bring peace back to the holiday season.