Things That Go Bump - S1.E4

Christopher, Rupert's literary agent and friend, buys a long-empty, old house with a view to renovating it and selling it. On his first night he sees, and talks to, a woman who has appeared in the house despite all the doors being locked. She asks for a glass of water but when he comes back with one she has gone. He is sure she is a ghost and, later, he hears strange sounds like a heart beat. The next day, he tells Rupert and Amy about his experience [Amy believes in ghosts, Rupert doesn't] and they agree to stay at the old house with him that night. Nothing happens ...