Osgood: Murder in the Tomb

Howard Ralston, millionaire antiquarian, defies fate by obtaining three deadly artifacts for his collection: a Borgia poison ring, a Chinese vengeance dagger, and the mummy of Serapion, one-time Imperator of the Brothers of Karnak. Murder results and both corpse and mummy vanish. Police detective is joined by private detective and together, though not always on the same page, they unravel the strange mystery of Murder in the Tomb.

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First published in 1937.