Fiona and Philip head to France to see if they can reverse an art world decision which one owner refuses to accept. Alain was given two sketchbooks by his grandmother back in 1965. Although she never revealed where they came from, they were thought to be the work of Toulouse Lautrec, the aristocratic artist born in 1864 known for his atmospheric depictions of Parisian nightlife. Alain waited 50 years before he decided to present the sketches to the French committee responsible for authenticating the work of Toulouse Lautrec. Unfortunately, the committee did not accept them as the work of Lautrec and stated they were the work of another artist - Rene Princeteau - meaning they are worth just a few thousand pounds instead of many hundreds of thousands. For Fiona and Philip, this is on one of their toughest investigations - they must not only discredit the sketches as the work of Princeteau but also persuade the committee to change their mind.