Aron Morgan lodges a complaint against Matilda for harassing Davey, and the police are unmoved by Matilda showing them what she believes is a clue to Carys' disappearance. Rose is pushed to breaking point as old wounds are reopened, Ed gets jittery as Trudy gives him the cold shoulder, and Graves becomes increasingly suspicious that he's hiding something. Sylvia reveals the peculiar ancestry of the Dean family, Hal identifies the source of the eerie music on the audiotapes, and Trudy remembers a crucial detail about the day Carys vanished. Psychological thriller, starring Lydia Wilson.