Book Five of The Dresden Files: Death Masks by Jim Butcher

If the Shroud of Turin was stolen I think it is quite obvious on who you would call to get it back. That's right, Harry Dresden – Wizard. A representative from the Vatican, Father Vincent, contacts Dresden to help them locate the stolen Shroud of Turin, which they believe, has been taken to Chicago. Could this be related to the headless and mutilated corpses that he has been asked by the SI detectives to help identify? And who or should I say what is also after the Shroud and appears to...