Murder of a Lady (alternate title: The Silver Scale Mystery)
Mary Gregor was stabbed to death in her bedroom at Duchlan castle, but the room was locked from within, and the windows are barred. Inspector Dundas is dispatched to investigate. Then more deaths, equally impossible, occur. Luckily for Dundas, gifted amateur sleuth Eustace Hailey is on the scene to lend a hand.
Novel, 297 pages, Trade Paperback, Reprint (originally published in 1931)