Alias the Lone Wolf

The Vanished Messenger

Peter Ruff and the Double Four

The Secret of Lonesome Cove

The Lerouge Case

The Red Thumb Mark

The Triumphs of Eugène Valmont

Through the Wall

The International Spy

The Mystery

The Lure of the Mask

The Secret House

The Great Impersonation

The Clique of Gold

Rogues and Vagabonds

The Man in Lower Ten

In the Onyx Lobby

Cord and Creese

The Black Box

Initials Only