The Sinister Man

The body of an Oxford professor is found floating in the river Thames. He had previously been studying an Artifact (archaeology) known as the ''Kytang Wafers'', and this is now missing. Scotland Yard investigates. The wafers are bits of ancient text that could alter the relations between China and a Tibetan type nation called "Kytang". An autopsy reveals that the professor was murdered by a karate blow.