1/3 Steve Punt travels to Paris to investigate the death of celebrated writer Emile Zola.
3/3 Steve Punt investigates how Peter Gibbs vanished into the night on Christmas Eve 1975.
2/3 Steve Punt searches for the Cezanne masterpiece, stolen during the millennium celebrations
1/3 Steve Punt probes the unsolved murder of Hollywood director William Desmond Taylor in 1922
4/4 Steve Punt examines the mysterious case of a woman found dead inside a tree.
3/4 Steve Punt PI examines the curious case of Victor Grayson, the MP who vanished.
2/4 Steve Punt examines curious rumours surrounding the 1971 Baker Street bank heist.
1/4 Steve Punt examines the case of Alfred Loewenstein, who fell out of his own plane in 1928.
1/4 Steve Punt investigates the vanishing machine gun inventor, William Cantelo.
3/4 Steve Punt goes in search of a recording of Queen Victoria's voice.