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.
2/4 Steve Punt turns private investigator to reopen a mysterious case of collapsing children.
1/4 Steve Punt turns gumshoe, investigating a case of murder by poisoned partridge in 1931.
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.
4/4 Steve Punt investigates the killing of two performing bears in the Forest of Dean in 1889.
3/4 Steve Punt PI investigates the gruesome death, in 1945, of farm labourer Charles Walton.