Unnatural exposure - Patricia Cornwell

A sadistic serial killer, the weapon a deadly virus
Dublin, Ireland and Richmond, Virginia: separated by thousands of miles - linked by murder. For Dr Kay Scarpetta a lecture stint in Ireland provides the perfect opportunity to find out if the murders on both sides of the Atlantic are indeed connected. Five dismembered, beheaded bodies were found in Ireland five years ago - now four have been discovered in the States.
But the tenth corpse in Virginia is different. There are vital discrepancies, and an indication that the elderly victim was already seriously ill. A copy-cat killing. Ghoulish, perhaps, but not unusual. And then abject terror grips Scarpetta and her colleagues when the next body is found. The circumstances of death broadcast a clear and horrifying message: the killer is armed with the most lethal weapon on earth - smallpox.

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