The Mysterious Affair at Styles

What are Arthur and Poirot’s experiences of WWI, and how do they differ from the other characters’ experiences? Does the war play a part in the plot? Why or why not?

Why does the novel make readers distrust Alfred Inglethorp from the beginning? Does this make the revelation that he is the murderer more or less surprising? Why?

What are Arthur’s strengths and weaknesses as a narrator? Why does the novel feature a narrator with weak spots?