Spanish journalist, Julia Navarro's 'The Brotherhood of the Holy Shroud' was released in December in the US and will come out in February in the UK.
From the Random House website: "Julia Navarro is a well known Madrid-based journalist who is currently a political analyst for Agencia OTR/Europa Press and a correspondent for other prominent Spanish radio and television networks and print media, including a weekly column for Tiempo magazine. Bantam Dell will publish the English translation of her second novel, The Bible of Clay, in Spring 2008."
Synopsis from amazon.co.uk: "The Brotherhood Of The Holy Shroud" is the explosive international bestseller that mixes fact and fiction to tell the riveting story of one of the world's most controversial relics, the Turin Shroud - believed by millions of the faithful to bear the likeness of Christ - and the desperate race to save it from those who will stop at nothing to possess its legendary power. A fire at the Cathedral of Turin and the discovery of a strangely mutilated body attract the attention of Italy's special Art Crimes Department, for the fire is only the latest in a troubling series of arson attacks and break-ins at the cathedral which houses the famous shroud. Department chief, Marco Valoni leads a team of top investigators in a race to solve a crime certain to shock the world: someone is planning to steal the Holy Shroud. Spanning centuries and continents, from the storm-rent skies over Cavalry, through the glories of Byzantium and the intrigue and treachery of the Crusades, "The Brotherhood of the Holy Shroud" is a provocative page-turner of the highest order - one that will challenge you to believe."
You can read an excerpt here.