Murder on the Orient Express by Agatha Christie

Belgian detective Hercule Poirot finds himself, by chance, in the middle of a murder investigation aboard the Orient Express on his way to London. The most interesting thing about this murder is that it occurs on a train that becomes stranded in the middle of a snow storm. The murderer remains on the train, and Mr. Poirot, a famous investigator, sets about to solve the case. With the help of a train company executive and a doctor, who both happen to be onboard, Poirot examines evidence, interviews the passengers, and discusses the possible circumstances. The trio narrow it all down to two possibilities. So who is really the killer?

Dan Stevens (Downton Abbey) narrates the unabridged audio version that I borrowed from the library. He is incredible. He's the best narrator I've ever heard by far, and I listen to a lot of audio books. I can't wait to listen to him tell more stories.