The Seventh Plague (Sigma Force Series)

Two years after vanishing into the Sudanese desert, the leader of a British archeological expedition, Professor Harold McCabe, comes stumbling out, but he dies before he can tell his story. The mystery deepens when an autopsy uncovers a bizarre corruption: someone had begun to mummify the professor’s body—while he was still alive.

Professor McCabe had vanished while searching for proof of the ten plague...