Mystery crime fiction written in the Golden Age of Murder "This 1931 novel, now republished as part of the British Library's Crime Classics series, is a cunningly concocted locked-room mystery, a staple of Golden Age detective fiction." --Booklist STARRED review Duchlan Castle is a gloomy, forbidding place in the Scottish Highlands. Late one night the body of Mary Gregor, sister of the laird of Duchlan,...