Books in the Payne & Jones series in order

The #1 INTERNATIONAL BESTSELLING ADVENTURE!!!AN ANCIENT TREASURE: While visiting the scenic country of Malta, Jonathon Payne and David Jones bump into an old friend, who has come to the islands to search for a long-lost treasure of the Knights Hospitallers, an organization that dates back to the First Crusade in 1099 AD.A VENGEFUL CRIMINAL: When Ivan Volkov-the ruthless leader of a Russian crime syndicate-is betrayed, he is willing to do anything to get retribution. Protected by a team of hackers and henchmen, he travels to the Mediterranean where he leaves a trail of bodies in his wake.A FINAL SHOWDOWN: Before returning home, Volkov learns about the ancient hoard, one with possible ties to Paul I and the Russian Empire. With pride and riches on the line, he focuses his wrath on the only people who stand in his way, but Payne and Jones refuse to back down as they try to locate one of the most important treasures of antiquity, while battling one of the world's most dangerous criminals in a deadly fight to the finish.