This year sees the 20th anniversary of the Carbon 14 dating of the Shroud of Turin that deemed the most famous relic in Christendom a fake. But since then, despite many attempts, no one has been able to determine who the forger was or how the forgery might have been done. This documentary sets out to discover exactly what it is about the image on the Shroud of Turin that has defied imitation and explores new evidence that may challenge the Carbon 14 verdict.