A former prolific forger, Shaun Greenhalgh, spent 30 years creating impressive fakes in his garden shed, duping experts with his Medieval and Islamic reproductions. After serving time in prison, he teams up with Dr. Janina Ramirez, an Oxford historian, to uncover and preserve ancient secrets.

A renowned forger, Shaun Greenhalgh, is tasked by Dr. Janina Ramirez, an Oxfo...