The Louvre Museum reveals the intriguing lesser-known story of "The Flight into Egypt". This documentary highlights a whole area of the history of works that museums and experts generally prefer to keep quiet - the issue of ownership and authentification, and by extension, price, which propels art history into law manuals and the law courts. Complaints, prosecutions, trials and convictions are now a daily part of the lives of works of art and of those who are in charge of them. The issue of expertises and laboratory reports as legal arguments is the main topic of this episode, which is unlike the others in The Hidden Lives of Works of Art series, and examines a different aspect of the material lives of the works.