The Grand Babylon Hotel

Strange things are happening in the hotel. First, Racksole notices the headwaiter, Jules, winking at his daughter's friend, Reginald Dimmock, while they consume their expensive steak. He dismisses the headwaiter. The next day Miss Spencer, the pretty, efficient hotel clerk who has been employed there for years, disappears. It appears that she just took her things and left, no one knows when or where. And Prince Eugen, a prince regnant of Posen, who was to come to the hotel and meet his youthful uncle Prince Aribert (he and the nephew are of the same age), never turns up. Then the body of Dimmock, who was an equerry to the princes, come ahead to prepare for their visit, is found. He was obviously poisoned. And soon after, Dimmock's body disappears.