The Sign of Silence

Hushed Up! A Mystery of London

As We Forgive Them

The Tickencote Treasure

The House of Whispers

The Stretton Street Affair

The Czar's Spy

The Four Faces

The Great White Queen

An Eye For An Eye

The Counts Chauffeur (Unabridged): optional

An Eye For An Eye

The Stretton Street Affair (Unabridged)

The House of Evil

The Invasion

The Secret of the Fox Hunter

The Secret of Dr. Vaux's Intrigue

The Secret of the Black Bag

The Secret of the Smoked Spectacles

Behind the Bronze Door