Whilst investigating the theft of a stolen Da Vinci, reformed art thief Tom Kirk is confronted with the horrifying sight of a cat nailed to the wall where the painting once stood. He recognises the sign as a greeting from his old enemy Milo, and then finds out that a long time friend in Seville has been murdered. Meanwhile, in New York, FBI agent Jennifer Browne has been asked to investigate a possible art fraud. The trail leads to an Iranian art dealer who denies all knowledge, but when a lawyer who he had dealings with is murdered, Jennifer knows she has stumbled across something very sinister. Are the reappearance of Milo, the murder of Tom's friend and the stolen Da Vinci connected? Are Tom and Jennifer's paths destined to cross again as they descend into a maelstrom of deadly betrayal?