If it hadn't been for Lucas's photographic memory, they might not have remembered the man. It had been almost a year since she and Kari noticed him copying a famous Rembrandt painting in the Minneapolis Institute of Arts. But now in the National Gallery in London, they spot the same guy, copying another Rembrandt. Then, when a never-before-seen Rembrandt painting is discovered in Amsterdam, the girls begin to suspect the truth. Convinced that no one...