A goods train speeds through the Sapperton Tunnel, but disaster strikes before it can reach the other end as it collides with an unusual blockage on the line: seven sheep penned onto the tracks.
Specially requested to investigate the carnage in Gloucestershire, Inspector Colbeck and Sergeant Leeming are confronted with a bizarre case unlike anything they’ve encountered before. Stephen Rydall, a director of the Great Western Railway, is convinced the tragedy is a personal attack on him.
Rydall has many enemies, but as Colbeck will soon discover, the man also has a closely guarded secret of his own. The eighteenth instalment in the bestselling Railway Detective series.
