Cairo Jim and the secret sepulchre of the Sphinx : a tale of incalculable inversion

A fragment of an old diary puts Cairo Jim on the trail of a secret more stunning than all the Seven Wonders of the World put together.

It's the find of the century - and Jim and his friends are the heroes of the hour.

But behind the scenes lurks a manicured, prune-smelling, fez-wearing villain, with a devious plot to blast Jim's hard-earned reputation to pieces.