A Late Phoenix by Catherine Aird, is an English mystery, "With undertones of war." "And overtones of murder."
The Serving Men poem by Rudyard Kipling was mentioned in the Aird book; I was not familiar with it before reading this novel. Here's an excerpt and illustration:
Another excerpt included a real person, Doctor Harley Crippen, who was born and raised in the United States though became infamous in England.
"He wouldn't have killed that girl." "He was a doctor, Inspector." "He was dedicated to saving life, not wasting it." "...Sloan didn't argue; though a first-class medical training hadn't stopped those well-remembered doctors Harley Crippen, Buck Ruxton....from doing murder in their day."
A Late Phoenix was described in this blog.