The Doomsday Key: James Rollins

At Princeton University, a famed geneticist dies inside a biohazard lab. In Rome, a Vatican archeologist is found dead in St Peter's Basilica. In Africa, a US senator's son is slain at a Ghanaian Red Cross camp. Three murders on three continents and each victim is marked with a Druidic cross burtn into their flesh. A centuries old riddle, a ghastly crime against humanity hidden within a cryptic medieval codex and a race against time!