But a year later, she did see him in London. Walking through the National Gallery, Kari heard a familiar snarl. It was the same guy, and he was copying from another Rembrandt. Was it was just a coincidence? If so, why was he in disguise?
Using the kind of ingenuity and determination that only two teenage girls could come up with, Kari and Lucas embark on an international adventure to figure out who this mystery man is and what he's up to. But neither is prepared for what they find. Suddenly what began as a madcap pursuit becomes deadly serious. Will they risk their lives in the name of art?