pstrongMiss Marple and Hercule Poirot both make appearances in Agatha Christie's emDouble Sin and Other Storiesem, a sterling collection of short mystery fiction that offers double the suspense, surprise, and fun.strongppIn one of London's most elegant shops, a decorative doll dressed in green velvet adopts some rather human, and rather sinister, traits.ppA country gentleman is questioned about a murder yet to be committed.ppWhile summoning spirits, a medium is drawn closer to the world of the dead than she ever dared imagine possible.ppIn a small country church, a dying man's last word becomes both an elegy and a clue to a crime.ppThese chilling stories, and more, cleverly wrought by master Agatha Christie and solved by the inimitable Hercule Poirot and Miss Jane Marple.pp p--A. N. Wilson