Whitstable Pearl S02E05 - Hidden Treasures

Dolly notices unexplained things happening in her house: the shower being left on when she hasn't used it, money going missing and then reappearing, the radio tuned to the wrong station. Pearl fears her mother is showing early signs of Alzheimer's disease, but she hooks up security cameras to placate her. What they see on the footage leads to a surprising solution to the problem.