
Some reviewers have commented on the lack of pace, and while it is true that for the majority of the book Tommy and Tuppence poke their noses into other people's business asking questions, the tension gradually increases very effectively, with a definite sense of underlying menace felt at Sans Souci in the second half of the book.For a novel written at the height of the Second World War, the author refreshingly displays a very enlightened attitude to Germans as a nation, when often Germany is portrayed as being a country full of Nazi sympathisers and collaborators. Originally published in 1941, the setting and atmosphere feel authentic, even though some of the notions discussed feel very outdated by today's standards (phrenology, really?). Together they set out to uncover the identities of N or M, but spying on others and asking questions is a dangerous business as they soon attract the attention of enemy agents.This was an enjoyable romp with a very likeable pair of leads, but maybe not on a par with some of Agatha Christie's better-known novels. When Tommy finally arrives at Sans Souci after a couple of days spent covering his tracks, he is introduced to the other boarders, one of whom is Tuppence under an assumed identity. One day, a Mr Grant appears and makes Tommy an offer he can't refuse: to go undercover in a small town on the South Coast and try to root out members of the Fifth Column - the enemy within - who have connections to a boarding house called Sans Souci the only problem is that Tuppence can't go with him.

It's 1940 and Tommy and Tuppence are frustrated that the government won't allow them to do their bit for the war effort by working in Intelligence again. not much action or murder until towards the end. This was easy to read and a bit of a drag. Indian", but at least she didn't go on & on about that. Yes there was her blatant bigotry, right at the beginning about "Red Indians The only good Indian is a. The clues are there and I must say that I am delighted that more & more often I am able to figure out "who done it", as I have never been able to unravel a Christie until now.

Blenkinsop (turns out to be Tuppence) and together they unravel the mystery of N or M. Tommy comes to stay in a respectable guest house and makes a fast acquaintance w/ Mrs. Upon discussion it is surmised that there is a German agent either the infamous N or M in San Souci and so Tommy is sent to uncover and bring down the spy. In her absence Tommy is asked to help decipher a cryptic message that a dying agent passed on to them.

The man in charge wants to exclude Tuppence, so she "conveniently leaves" to visit a friend who has just rang-her-up. bored at home, wanting something to work on when a mystery from the home office turns up. WW II, Tommy & Tuppence are older & retired.
