Agatha Christie's Elephants Can RememberDramatised by Michael BakewellA provocative question posed by a formidable busybody sends Hercule Poirot and Ariadne Oliver on a series of journeys to unravel the mystery of a tragedy from the distant past - provoked in equal measure by love and hate.Hercule Poirot: John MoffatAriadne: Julia McKenzieChief Superintendent Garroway:Trevor CuthbertsonCelia: Rachel BavidgeDesmond: Ifan MeredithMrs Burton-Cox: Paula JacobsJulia: Jane WenhamNanny: Barbara AtkinsonMrs Buckle: Elizabeth ProudMrs Rosentelle: Jill BalconZelie: Alexandra BastedoMr Goby: Stephen ThorneGeorge: Patrick GarlandMusic: Tom SmailProducer/Director:Enyd WilliamsThe Saturday Play:Sat 7th Jan 200614:30 on BBC Radio 4 FMHercule Poirot stood on the cliff-top. For here, many years earlier, there had been a tragic accident – the broken body of a woman was discovered on the rocks at the foot of the cliff. This was followed by the grisly discovery of two more bodies – a husband and wife – shot dead. But who had killed whom? Was it a suicide pact? A crime of passion? Or cold-blooded murder? Poirot delves back into a crime committed 15 years earlier and discovers that, when there is a distinct lack of physical evidence, it’s just as well that ‘old sins leave long shadows.'