south of france which means that the mastermind behind the crime was interest ed in acquiring napoleonic artifacts as well as the art. still so p many questions, and so few reliable leads, but the trail may not be as cold as you'd think. >> we do find that there's those two polar extremes. one is a very quickly after the theft, we'll locate the work, because it is being offered by for sale by a criminal or handler. or art will be underground, and we won't see it for a decade, and very little in between. >> investigator christopher marinello recently recovered a matisse that was stolen 25 years a ago, and he believes that the gardner paintings will resurface, and so does anthony immoret who has worked tirelessly with the fbi to get