imageShelfari has a guest posting by Jon Jefferson, “the writer behind the New York Times bestselling Jefferson Bass "body farm" novels, for which Jefferson has partnered with forensic anthropologist Dr. Bill Bass. Jefferson is a veteran journalist, writer, and documentary filmmaker. His writings have been published in the New York Times, Newsweek, USA Today, and Popular Science, and broadcast on National Public Radio.” Discussing The Inquisitor’s Key:

One of the favorite assertions of the believers is that only a miracle could have created the ghostly, lifelike image; there’s no known technique, they say, by which human hands"”especially medieval hands"”could have created it. But at least two reputable researchers, professional skeptic Joe Nickell and forensic anthropologist Emily Craig, have shown that a medieval artist could easily have created the image, using red ochre pigment applied with a dust-transfer technique, like the one employed to make brass rubbings from tombstones.

Source: Shelfari: The Inquisitor’s Key: The Shroud of Turin and the Ultimate Game of "What if?"