The Man in Lower Ten by Mary Roberts Rinehart

A ruthless criminal who will stop at nothing to squash the evidence against him. A beautiful woman with a mysterious secret. A doomed express train. A murdered man in a sleeping compartment. An amateur detective up on all the latest inductive methods. And a hero who looks for all the world like a murderer.

You can rely on these ingredients to produce first-rate entertainment, and you can rely on Mary Roberts Rinehart, the queen of American mystery writers, to make the best use of her ingredients.

The Man in Lower Ten at Amazon.com.