The Doomsday Key

Three brutal murders, three high-profile victims, three bodies marked with a mysterious and archaic symbol...The massive SIGMA Force thriller from the NEW YORK TIMES bestselling author of MAP OF BONES and THE LAST ORACLE.

At Princeton University, a famed geneticist dies inside a biohazard lab. In Rome, a Vatican archaeologist is found dead in the heart of St Peter''s Basilica. In Africa, a US Senator''s son is slain within a Red Cross camp in Ghana. These three murders on three continents bear a horrifying tie: all the victims are marked by a Druidic pagan cross burned into their flesh.

The bizarre murders thrust Commander Gray Pierce and SIGMA Force into a global hunt for a powerful group of industrialists who have a stranglehold on the world''s food supply. Aided by two women from his past, Gray flees a trio of high-tech assassins as he pieces together the clues. But saving the world comes at a price: Pierce must sacrifice one of the women. Yet even that pric