In the morning, Effy encounters the Fairy King. She runs away, baffled, as she’d taken her pills and vowed not to believe in imaginary things. She hopes that when she and Preston uncover the truth, the Fairy King will leave her alone. On her way to the house, Effy meets Ianto, who is preparing the trees for the coming storm. He asks her to bring him his jacket, and she takes the opportunity to steal the key from around his neck. Inside, Effy meets Wetherell, who tells her he is leaving and encourages her to do the same. She and Preston approach the flooded basement, and Effy swims inside. She struggles to retrieve a metal box printed with the word “Angharad.” Back at the guest house, Effy changes from her wet clothes and begs Preston to stay. They have sex and fall asleep for their final night at Hiraeth Manor.

Effy wakes to the sound of the approaching storm. They prepare to leave, but they realize Myrddin’s photos and letters are still inside. Near the cliff edge, Effy sees the violent sea and thinks about the legend of the Drowning.