It is the most controversial religious icon in the world.

No one knows where it came from.

No one knows when it was made.

But now, the greatest mystery in religious history holds the key to a present-day serial killer who devises savage, bizarre deaths for his victims.

And only two American cops, following a trail that stretches from California to the Vatican, can expose the secret of the Shroud.

From internationally bestselling author Sam Christer, published in 35 languages around the world, comes a thriller packed with relentless action, shocking twists and astounding research - the most suspenseful and intelligent novel of its kind since The Da Vinci Code.