A secret should never be told. Or should it? Because keeping silent can have deadly consequences...
Not least for Laura Green, the signalman’s daughter, who has proudly followed in her beloved father’s footsteps. David Green, the archetypal quiet family man, is visited unexpectedly by a long-lost school friend, who is then found dead underneath an experimental gas-turbine locomotive in the back of Woodford Halse engine shed. It is not long before Green is accused of murder.
It seems barely credible. This unassuming, dependable signalman would never do such a thing... but as DCI Vignoles presses home his investigation, Green seems to know more than he is admitting about an encounter with Rosie, the village beauty one hot May day before the war, which ultimately ends in tragedy.
DCI Vignoles muses that this case’s complexities have a metaphor in the intricacy of wires, levers, pulleys and rods, which when activated by the signalman’s daughter all conspire with one result… …a signal warning red for danger!