Walk into any of the world's museums or art auction houses, and you have good reason to doubt your own eyes. Is that Picasso real? Did Modigliani really paint that masterpiece? The answer may be no. These works could very well be the hand of one of history's most versatile and prolific art forger-Elmyr de Hory. 40-years after Elmyr's death, Filmmaker Jeff Oppenheim ("Funny Valentine," Universal Pictures, "A Passion for Giving," PBS) embarks on a re-examination of the facts of the case. A cadre of art experts discuss the issue of forgery within the art market at large, while a team of investigators dig into the life, art and crimes of this enigmatic forger. Assuming all previous information known about this forger might be as "wrong" as his art, the team examines the provenance, forensics and connoisseurship of Elmyr de Hory. Together they cut through a myriad of aliases, searching for never-before-revealed archival records, police files and personal remembrances of those that knew him. In the center of it all is a magnificent trail of evidence-a bedazzling treasure trove of original impressionist and post impressionist masterpieces estimated to number in the thousands and potentially now worth billions. All Fake.