Con Artist (2004)

It is a story of forgery, betrayal, and threats. In one of the more unusual criminal cases of British justice to grab the public's attention, two men are on trial in a Crown court in London, England. After getting caught in a con that was rewriting art history, one painting at a time, they are charged with a criminal conspiracy to pass off millions of dollars in fake paintings by modern artists.

Unfortunately the movie Con Artist is not yet available on HBO Max.