Third Girl (Poirot)A perplexed girl thinks she might have killed someone Three single girls shared the same London flat. The first worked as a secretary; the second was an artist; the third who came to Poirot for help, disappeared convinced she was a murderer. Now there were rumours of revolvers, flick knives and blood stains. But, without hard evidence, it would take all Poirots tenacity to establish whether the third girl was guilty innocent or insane