The Pearls of Doom — G.H. Teed

From the moment Sexton Blake and his assistant find the murdered bodies of a white man and a native in a bungalow on a South Sea Island, they are on a trail that grows more and more puzzling. Blake discovers George Marsden Plummer is involved, and the manner in which he pits his skill and detective powers to bring the notorious international swindler to book, makes a novel of the most absorbing interest.