The Railway Viaduct - Edward Marston - Bog

It is 1852, and Inspector Robert Colbeck and his assistant Sergeant Victor Leeming are faced with their most difficult case to date. As a train speeds over the Sankey Viaduct, a man is hurled from a carriage into the canal below. It later transpires that he has been stabbed to death. This book is the third in the "Railway Detective" series.