I picked up the book because the first murders takes place at Jim Morrison's grave in Pere Lachaise cemetery - I kept reading it because it's good.
Through a strange twist of political positioning, the murder investigation has been hijacked from the French police by a CIA spook and the US embassy's security chief. And while they're chasing a terrorist as their lead suspect, they also secretly know he's not the murderer - so they're chasing the real killer on the side.
Throw in a sexy newspaper reporter, a substance abuse problem, and a truly deranged serial killer and you'll see why I found this book so entertaining. The investigative characters are well developed and interact in the joking, knowing way long-time friends can. While the Scarab's plan is no secret to the reader, but his full implementation is still shocking.