Played by René Auberjonois
Pierre-Francois Lambert is a French artist. He is a mediocre painter in his own right, and an extraordinary forger and all-around fraud. He is believed to be working with Michael Beaumont, one of the top master criminals in the US, involving in drugs, espionage, and stock manipulation.
In "The DeJon Caper", Lambert travels with Jaime Sommers to Paris to assist her in catching Beaumont. They plan to do so while Beaumonth and his gang are in the act of switching a forged DeJon painting with a real one at the Musée de Rousseau. Lambert and Jaime later board a boat of Corsican mafioso Alfredo Moreau in Cannes and expose Beaumont as a fraud.