A classic Agatha Christie short story, available individually for the first time as an ebook.Every morning, at the same hour whilst on the golf course, Jack Hartington hears mysterious cries for help. He speaks to a resident of the cottage from which the cries emanate and learns that she has unsettling dreams of a woman with a blue Chinese vase. Believing that the cries for help are from the late Mrs Turner, the former resident of the cottage, Jack hires a psychic investigator to spend a night in the house, a night which proves to have startling results…