Charles Finch brings Charles Lenox in a third novel in a prequel trilogy to the series in The Last Passenger. Set in Victorian London in 1855 during the days leading up to the Civil War in America, this clueless murder case may be young detective’s most disturbing case.

It’s a way to discern the man Lenox will become and those who form part of his mature life when he’s called in to the case of murder. A has been found on a train to London without any way to identify it. What is first thought of as a case of theft may instead have ties to the anti-slavery movement hitting America.

Throughout the investigation is Finch’s deep respect for language and for historical accuracy. Readers will learn about the mores and customs of the era, the social prejudices, and the ways of the era.

The character’s are realistic and fit the time period, from the main to the smallest side parts. And the book fills a hole in Lenox’s own history, while at the same time pointing out the class differences all around, even extending to women and their roles. Of course, there are all the women thrust at the highly marriageable Lenox.

But that is additionally to the investigation he undertakes, and the obstacles he finds. An accomplished and realistic look at the differences between UK and US times, there is enough humor to keep the book afloat as Lenox figures it all out.