Cadi and Vaughan interview Piotr, a Polish worker who is employed at the old hospital but he is reluctant to share any information with them. The sisters say goodbye to the house on the island.
Cadi must release Piotr, but is focused on solving the case before going away. Siwan and her mother-in-law discuss the future of the farm. Siôn loses his job and spirals out of control.