"I chose you before I knew the word for another world." — Zachary. Drowning kills him. He wakes as mate to Matthew, a black panther who trusts no one, and stepfather to Jaden, a cub flinching at shadows. This body once ruled by cruelty; the tribe waits for the monster's return. Zachary sews coats. Stacks food. Does not touch what is not offered. Matthew watches. Jaden hides. Winter is coming. The cave is cold. For the first time, they might survive it—together.