Wydawca: 8

The Mystery of Mr. Bernard Brown

E. Phillips Oppenheim

The Mystery of Room 75

Fred M. White

The Mystery of Sgt Adela White

Marcin Brzostowski

The Mystery of the Clasped Hands

Guy Boothby

The Mystery of the Four Fingers

Fred M. White

The Mystery of the Gold Box

Valentine Williams

The Mystery of the Green Ray

William Le Queux

The Mystery of the Hasty Arrow

Anna Katharine Green