TY - DATA AU - Christie, Agatha AU - Bond, Samantha TI - N or M? PY - 2001/// PB - Stuart Owen KW - English Film - Audio Book N1 - 3 discs N2 - In this title, two unlikely spies help to defend their country by trying to rout out two highly placed Fifth Columnists. When Tommy is asked by the British Intelligence Service to go and stay at the Sans Souci guesthouse, he is astonished to see Tuppence there. The mission: to identify which of the other guests is N and which is M ER -