00561pamaa2200169 4500 0000032620 20130709090000.0 090826 eng 9780006169185 / 000616918x (pbk.) PR6005.H66i2 CHR 1965 Christie The big four Agatha Christie. London: Harper Collins, 1965. 221 p.; 20 cm. Poirot, Hercule (Fictitious character) -- Fiction Private investigators -- England -- Fiction Detective and mystery stories