Following a string of successful performances along the west coast, the Moscardi Circus is travelling by train to Hexham on the Newcastle to Carlisle Railway for their next show. Yet a collision on the track causes pandemonium. When the headless body of a woman is discovered in nearby woodland, Inspector Colbeck is desperate to lend assistance, however a reluctant Superintendent Tallis forbids him from doing so. 

December 1860. Headed for the morning shift at the Swindon Locomotive Works is an army of men pouring out of terraced houses built by the GWR, a miniature town and planned community that aims to provide for its employees from cradle to grave. Unfortunately, boilersmith Frank Rodman is headed for the grave sooner than he'd expected, or he will be once his missing head is found. Colbeck, the Railway Detective, finds his investigation into Rodman's murder mired in contradictions. 

East Anglia, 1861. Alone in a first-class carriage, the Swarbricks are robbed at gunpoint. But when the universally admired Swarbrick fights back, the train robber takes more than money and jewellery, killing the man working to unify East Anglia's tangle of railway networks. Inspector Colbeck is brought in from London, but as Swarbrick's glowing reputation begins to crumble, the line of investigation isn't clear. 

1860, Wimborne, Dorset. Rebecca Tullidge, miserably married to her callous husband, is having an affair with a railway officer, John Bedloe. Much to her distress, she trips over her lover's dead body on the railway tracks. Determined to win votes for the upcoming election of mayor, Mr Feltham calls for Inspector Colbeck and Sergeant Lemming to solve the hideous crime, which takes longer than anticipated.

A missing art student. An international investigation. A secret that will shatter the village of St Denis. Bruno, chief of police, faces a dark reckoning with France's past in this gripping mystery. A rich American art student is found dead at the bottom of a well in an ancient hilltop castle. The young woman, Claudia, had been working in the archives of an eminent French art historian, a crippled Resistance war hero, at his art-filled chateau.