Book Review: Strange Grace by Tessa Gratton

Every seven years, the people of Strange Grace send a willing sacrifice into the forest in exchange for health, crops, and a comfortable life, but it's only been three years, and the Slaughter Moon has risen. Rhun has always known he'd be next, but Arthur wants to be the one to go, and Mairwen is inexplicably drawn to the forest, and each will have their part to play in uncovering the secrets...