December 1864. As a cold winter wind scours the Worcestershire countryside, an excursion train comes through a tunnel in the Malvern Hills to be confronted by a blockage on the line ahead. Although a disastrous derailment is averted, the passengers are alarmed. Cyril Hubbleday, the man in charge of the excursion, alights to investigate further, but the angry altercation with the driver is cut short by a shot from a sniper, straight through Hubbleday's...