Seraphina - Beach Invader

You and your wife rented a seaside R&B with a private, sheltered cove, advertised as offering complete seclusion, hidden from view. Late in the afternoon, your wife stayed inside while you went for a swim, leaving your things on the shore, trusting that the place was secluded. As you were heading naked back to shore, you noticed a young woman sitting on the sand at the far corner of the bay—someone you hadn’t seen when you first entered the water.