title: N or M? (Tommy & Tuppence Chronology)
author:  Agatha Christie 
description: Tommy & Tuppence are hired to track down wartime spies at a seaside resort...It is World War II, and while the RAF struggles to keep the Luftwaffe at bay, Britain faces an even more sinister threat from 'the enemy within' -- Nazis posing as ordinary citizens. With pressure mounting, the Intelligence service appoints two unlikely spies, Tommy and Tuppence Beresford. Their mission: to seek out a man and a woman from among the colourful guests at Sans Souci, a seaside hotel. But this assignment is no stroll along the promenade. After all, N and M have just murdered Britain's finest agent!
zlib_text: N or M
  
  N or M
  N or M
  
  N or M
  
  Chapter 1
  Tommy Beresford removed his overcoat in the hall of the flat. He hung it up with some care,
  taking time over it. His hat went carefully on the next peg.
  He squared his shoulders, affixed a resolute smile to his face and walked into the sitting room
  where his wife sat knitting a Balaclava helmet in khaki wool.
  It was the spring of 1940.
  Mrs Beresford gave him a quick glance and then busied herself by knitting at a furious rate. She
  said after a minute or two:
  “Any news in the evening paper?”
  Tommy said:
  “The Blitzkrieg is coming, hurray, hurray! Things look bad in France.”
  Tuppence said:
  “It's a depressing world at the moment.”
  There was a pause and then Tommy said:
  “Well, why don't you ask? No need to be so damned tactful.”
  “I know,” admitted Tuppence. “There is something about conscious tact that is very irritating. But
  then it irritates you if I do ask. And anyway I don't need to ask. It's written all over you.”
  “I wasn't conscious of looking 