The Man of the Night

The Fellowship of the Frog (Unabridged): optional

The Daffodil Mystery (Unabridged)

Bones in London (Unabridged)

Bosambo of the River (Unabridged)

Sanders of the River (Unabridged)

The Clue of the Twisted Candle (Unabridged)

The Treasure Hunt

The Man Who Knew (Unabridged): optional

The Square Emerald (Unabridged): optional

The Black Abbot

The Green Mamba

The Green Rust

The Secret House

The Treasure Hunt

The Mind-Readers

The Terror