The Mystery of Francis Bacon
The Mystery of Evelin Delorme: A Hypnotic Story
The Mystery of Cloomber
The Mystery of a Turkish Bath
The Mystery of a Hansom Cab
The Mystery of 31 New Inn
The Mystery Hunters at the Haunted Lodge
The Mysteryes of Nature and Art
The Mystery at Putnam Hall: The School Chums' Strange Discovery
Mystery at Mesa Flat
Mystery at Geneva: An Improbable Tale of Singular Happenings
The Mystery at Dark Cedars
The Mystery and Romance of Alchemy and Pharmacy
Mystery and Confidence: A Tale. Vol. 3
Mystery and Confidence: A Tale. Vol. 2
Mystery and Confidence: A Tale. Vol. 1