27 books • 3 series
Book #1: The Murder at Sissingham Hall
Book #2: The Mystery at Underwood House
Book #3: The Treasure at Poldarrow Point
Book #4: The Riddle at Gipsy's Mile
Book #5: The Incident at Fives Castle
Book #1: Der Mord auf Sissingham Hall
Book #2: Das Geheimnis von Underwood House
Book #3: Der Schatz von Poldarrow Point
Book #4: Das Rätsel von Gipsy's Mile
Book #5: Der Vorfall auf Fives Castle
Book #1: A Case of Blackmail in Belgravia
Book #2: A Case of Murder in Mayfair
Book #3: A Case of Conspiracy in Clerkenwell
Book #4: A Case of Duplicity in Dorset
Book #5: A Case of Suicide in St. James's