Fellowship of Fear — Aaron Elkins

Meet Professor Gideon Oliver, full-time anthropologist, part-time detective, and brand-new visiting fellow at Heidelberg University. Even though the two previous occupants of his chair both died under mysterious circumstances, he's eagerly looking forward to his new position.

But Gideon's relaxing trip abroad will soon turn into a nightmare chase across the continent. For in a deadly game of murder and spy vs. spy, he's about to become a most important target. He won't know the rules. He'll have very little besides his considerable intellectual powers to help him. And he'll be playing for some fairly high stakes.

The Security of Western Europe. And his life ...