Mystery in White: A Christmas Crime Story (British Library - British Library Crime Classics) by J. Jefferson Farjeon, Martin Edwards (Introduction); 1937/2014. Softcover.

A snowbound train should be a safe, if slightly inconvenient, place to spend Christmas, no? Not in Mystery in White: Death, it turns out, is a passenger on this run, and as passengers begin to fear, and some make a bid for escape, J. Jefferson Farjeon keeps ratcheting up the tension, holding readers in his grip until the surprising conclusion.

Originally published in 1937, this British Library Crime Classics edition was published in 2014 and includes an introduction by Martin Edwards.