Railway to the Grave. The bestselling Victorian mystery series, Paperback/Edward Marston

Yorkshire 1855. When Colonel Aubrey Tarleton walks into the path of a speeding train, he is crushed to death. Inspector Robert Colbeck is immediately put on the case. Tarleton's wife had recently gone missing, but was the colonel responsible for her disappearance? It's up to Colbeck and his trusty sergeant Victor Leeming to uncover the truth.