This contains: The Coin of Dionysius; The Knight's Cross Signal Problem; The Mystery of the Vanished Petition Crown; The Holloway Flat Tragedy; The Disappearance of Marie Severe; The Mystery of the Poisoned Dish of Mushrooms; The Ghost at Massingham Mansions; The Tragedy at Brookbend Cottage; The Last Exploit of Harry the Actor; and The Ingenious Mr Spinola.