Sink is a tale of blood, madness, and the primal darkness that stirs beneath civilization's thin veneer. Isaac McKee--known among the Haudenosaunee as Pajackok--has lived between worlds, never fully at home among settlers or tribes. When fate throws him into the orbit of Ren Lalande, a towering French renegade, and his band of rogues, Isaac is swept into a venture more perilous than any border skirmish. Their captive, the infamous pirate-witch Morwenna Jones, holds the key to a mysterious map leading to a lost island on Lake Erie, where untold treasure--and unspeakable horrors--await. What begins as a quest for gold becomes a descent into a nightmare of ancient ruins, croaking demon-things, and eldritch rites. Civilization crumbles at the edges of the map, and in the swampy mire of forgotten gods, Isaac must confront the violence within himself as much as the terrors that rise from the water.