Terror of Gold-digger Creek

Two grizzly murders, one in Papua and a later one in London, launch master detective, Sexton Blake on an international search for the killer. He knows his opponent-the right hand is missing and in place he sometimes uses a terrifying hook.
What are the reasons for these ghastly murders? Who would do such a thing?
Into the jungles go Blake and Tinker, disguised. Into the jungles with their own wild tribes, and into Gold-digger Creek and danger!