Crime Collection: Cards On The Table: Mr. Shaitana collects snuff-boxes, Egyptian antiquities and murderers. Not caught murderers ('necessarily second rate') but the ones who got away with it. He invites Hercule Poiret around to meet his collection. Before the evening is over, the collector is a corpse - stabbed to death by one of his own exhibits...  N Or M? Tommy and Tuppence become involved in a case during the tense days of WWII - Hitler's most trusted agents are in England. N is a man - M is a woman. Both are masters of cunning, deception and murder. Set in a seaside boarding house inhabited by innocent-seeming boarders, Tommy and Tuppence are on the trail of a ruthless scheme of kidnapping, espionage and murder. A Murder Is Announced: '...and will take place on Friday October 29th, at Little Paddocks at 6.30 p.m. Friends, please accept this, the only intimation.' A joke, of course, in bad taste. But none of Miss Blacklock's friends can resist calling on her at the appointed hour. At 6.30 precisely, the lights go out...