By Ariel Sabar. The provenance of a papyrus that allegedly turned the gospel (as it were) of the celibate Jesus on its head leads Sabar from the titular Harvard prof with a feminist axe to grind (my favorite kind, don't get me wrong!) to a con man in Florida (where else), and parallels to Mark Hofmann.
If you're interested in theologic cons/forgeries but would prefer a less violent case than the Salamander bombings, this is the hardcover for you -- short-listed for an Edgar, this one's fresh from the warehouse.