Ordeal by Innocence written by Agatha Christie performed by Robin Bailey on Audio CD (Unabridged)

Dr. Arthur Calgary takes a ferry across the Rubicon River to Sunny Point, the home of the Argyle family. A year before, the matriarch of the family was murdered, and a son, Jack, was convicted and sentenced to spend the rest of his life in prison. Throughout the trial Jack had maintained his innocence..

, claiming he was hitchhiking on the night of the murder and he had been picked up by a middle-aged man in a dark car. Unable to locate this mystery man the police viewed Jack's story as a lie.

Calgary was the stranger in question, but he arrives too late for Jack, who succumbs to pneumonia after serving just six months of his sentence. Feeling a sense of duty to the Argyles, Calgary is surprised when his revelation has a disturbing effect on the family: it means one of the family is a murderer.