Publisher: 8

The Mystery of the Green Ray

William Le Queux

The Mystery of the Hasty Arrow

Anna Katharine Green

The Mystery of the Ravenspurs

Fred M. White

The Mystery of the Sea

Bram Stoker

The Mystery of the Sycamore

Carolyn Wells

The Mystery of the Yellow Room

Gaston Leroux

The Mystery Road

E. Phillips Oppenheim

The Napoleon of Notting Hill

G.K. Chesterton