Ninety-nine days. One cursed marriage. To save his clan from a curse that devours the land, Leodán of Cierzo must marry Sirel of Brasa: the most odious princess in the realm. But the hate she spits is only armor—and for three years she has secretly leaked the war-plans that kept her enemy's soldiers alive. Now they share one house, bound by a magic Thread that draws them closer every night. Both discover that hate was easier than the truth. The real enemy was never across the border: it sits on the throne that forced them to marry.