THE BLACK SPHINX is missing. Who wants it the most?

The indomitable CALLISTO? Queen of the Underworld SQUALIDA MACHEATH?
Or madder than a mackerel JASPER PEPPER?Or will it be CRISPIN RATTLE, our orphaned young hero?

But if jackal-headed gods can't stop JASPER PEPPER, what on earth can CRISPIN do?
Read this rip-roaring adventure in paperback now . . . and test your code-breaking skills against the hieroglyphic messages of the sphinx!