INQUISITION is the latest thrilling novel from Sunday Times bestselling author David Gibbins. Jack Howard will be tested to his limits on the trail of the fabled Holy Grail. '[The] Da Vinci Code of the deep sea' Daily Express AD 256. In Rome the emperor Valerian persecutes the Christians. Under cover of darkness, Pope Sixtus entrusts their most sacred object with a loyal follower and the Holy Grail disappears from history. 1684. Samuel Pepys has been sent by King Charles II to oversee the evacuation of the English colony of Tangier. However, he has another task; to retrieve an incredible treasure which has resurfaced after more than a thousand years.

But Pepys is not the only one searching. In Portugal, the Inquisition tortures a merchant suspected of being the key to the treasure, and they will do anything to get their hands on it . Present day. A 17th-century shipwreck off the Cornish coast reveals clues to an ancient mystery Jack Howard had thought beyond solving. Following these clues will take him on an epic quest from North Africa to the sunken ruins of the pirate city of Port Royal. But the spectre of the Inquisition dogs his steps with deadly determination, and Jack must overcome a descent into hell itself for the greatest reward in Christendom - the fabled Holy Grail.