John Minton was for a time one of the most popular 20th-century British artists, more famous than his contemporaries Francis Bacon and Lucian Freud. He has also been something of an obsession for actor and writer Mark Gatiss since he first saw one of his paintings as a teenager at the National Portrait Gallery. Mark plunges back into Minton's world to celebrate his remarkable life and work, but also to find out why Minton remains all but forgotten. As well as discovering unseen photographs of the artist and previously unknown works by him, the film also gives Mark the chance to hear Minton's voice for the first time in a rare broadcast he made for the BBC Third Programme in 1947. The connections deepen further as Mark meets some of those who knew him well - former models such as actor Norman Bowler recall posing for Minton, and fellow artist David Tindle discusses the rivalries between Minton and his contemporaries, notably Francis Bacon. Drawing on all these remarkable first-hand reminiscences, Mark explores the reasons behind Minton's fall from grace and the tragic circumstances of his death at the age of just 39.