The Caretaker (Episode 3) - "What Remains"

Claire drives to Sarah Mitchell's hometown and meets her mother, Margaret—a woman who has spent forty years knowing her daughter was murdered and unable to prove it. She learns that Sarah had a younger brother, Daniel, who vanished twenty years ago on a mission of patient vengeance. One by one, the men who killed his sister have died. Now only Claire's father remains. That evening, Claire sees the watcher for the first time: a figure standing motionless at the edge of the backyard. Her father insists it's Sarah herself, returned from the grave. But when footsteps circle the house at...