The Seventh Plague (Sigma Force Series)

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

Subsequently, the medical team who had performed the man’s autopsy has fallen ill with an unknown disease. Fearing the worst, a co...