Early one morning in October 1940, on a quiet farm on the Isle of Wight, 61- year-old farmer Frank Cave was found dead, killed with his own shotgun. After a police investigation, the woman who raised the alarm, Frank's young housekeeper, Mabel Attrill, was charged with his murder. There followed a notorious criminal trial at Winchester Assizes, featuring the most prominent pathologist of the day and one of the country's most brilliant lawyers. After many twists and turns, the trial reached an unexpected conclusion. Peter Cave, Frank's great nephew, who was born on the Isle of Wight, has now...