The Great Fire: In Real Time (2017)

S5E17 The Madonna Caper

As Steve assists a countess in recovering a microdot concealed within a painting at a museum, she cunningly swaps the original artwork for a forgery. To prevent a potentially embarrassing revelation from an incoming art expert, Oscar tasks Steve with tracking down the stolen masterpiece from its new owner. Time is of the essence as Steve races against the clock to secure the genuine piece before the counterfeit is unveiled to the public.