I Hope It's Just Poor Reporting... ... and their claim doesn't really rest on the copying of "research." The New Zealand Herald reports that "NZ author suing over Da Vinci bestseller." From the article: "But Baigent and Leigh, whose own 1982 work Holy Blood, Holy Grail caused such religious outrage when it was published that it sparked death threats, say Brown has lifted large tracts of their research without permission." Via BoingBoing.