On the night of the Mating Ceremony, Wren Calder is rejected in front of three hundred wolves by the mate she waited four years for. She runs, wolfless and banished, in a borrowed dress. She has one thing Silvermist never managed to take from her. She can count. Fifteen years of kitchen work put every tally in the pack in her head: the barrels, the sacks, the lamp oil, who owes grain and who is owed. Wren knows what her pack eats, what it spends, and where the numbers do not add up. The Alpha King who finds her in the forest does not offer her love. Kael Thorne offers her a contract. Ninety days as his Luna, in public, on her terms: a room with the key on her side, the whole truth, and nothing done in her name that she has not read first. Garrick Vale killed her parents and buried her in his kitchens to keep her quiet. He did not bury her memory. A pack can be fought with armies. It can also be fought by the girl who knows exactly what it eats. The white wolf in her blood is waking, and every pack in the north will have to choose a side. But the first weapon Wren Calder picks up is a tally stick.