Spring, 1858. The route of the Caledonian Railway through the southern uplands of the Scottish countryside is disrupted by a fatal crash. Inspector Robert Colbeck and Sergeant Victor Leeming are called from the crime of London to investigate, and must contend with old enemy Superintendent Rory McTurk to uncover the criminals behind the disaster.

"When Robert Pomeroy, a young undergraduate at Corpus Christi College, finds a letter slipped under his door in the early hours of a rainy day, he flies into a panic. Hastily readying himself and dashing off a few lines for the porter to summon his friend Nicholas Thorpe, he hurries to the railway station. But he doesn't reach his destination alive. Inspector Colbeck and Sergeant Leeming are called upon to investigate this tragedy on the railway....

"Halloween 1861. A special train with two carriages steams across the Lake District at night on its way to a place notorious for its record of supernatural incidents. Most of those on board have been fortified by alcohol so the mood is boisterous. Lighting inside the carriages is poor and without warning, the lamp goes out in the last compartment of the second carriage, plunging it into darkness. When the special reaches the end of its journey, the...

1861, East Anglia. 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, as the only detective in Britain with enough expertise for the job. But as Swarbrick's glowing reputation begins to crumble, the line...