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3/3 Steve Punt puts his ear to the ground in a search for the mysterious so-called World Hum.
2/3 Steve Punt visits rural Essex to explore the disappearance of actress Constance Kent.
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.