The twins lead Caith and Dubhain to the ruins of the hilltop fortress, their former home. There they make a fire with the remains of a staircase, but a ghost appears out of the smoke that transports Caith back to the night of the fall of the fortress and into the body of Padraic, head of mac Ceannann's household. There he relives the last few hours of the family until he is killed by the beast. Firinne retrieves one of the burning timbers from the fire as a keepsake, and the twins set off for the sea to search for their selkie father, with Caith and Dubhain in pursuit. Caith finds the selkie first, a whale floundering on the beach. But when the selkie shapeshifts to a man, he is killed by one of Moragacht's pursuing riders. In the ensuing confusion, Caith accidentally kills Ceannann. Firinne is devastated by the loss of her twin brother and gives Caith her keepsake from the fortress. Then, revealing her selkie birth, she changes into a whale and heads out to sea.