Murder on the Orient Express, Death in the Clouds, Why Didn't They Ask Evans?

Condition remarks:
Book: Very good
Jacket: Very good
Pages: Good
Markings: No markings

"Murder on the Orient Express" confines Hercule Poirot aboard a snowbound train where every passenger conceals a motive for the killing of a deeply unpleasant man, "Death in the Clouds" challenges Poirot to identify a murderer from a sealed passenger aircraft where a victim dies mid-flight without any witness coming forward, and "Why Didn't They Ask Evans?" sends two young amateur sleuths careening through a conspiracy of stolen identities and cold-blooded murder triggered by a dying man's cryptic final words.