Agatha Christie's 'Dead Man's Folly': stagnation, negation and adaptation

Two film adaptations of Agatha Christie's Dead Man's Folly can assist in deconstructing the novel as a textual folly. A comparison of Dead Man's Folly to The Body in the Library reveals that Christie's tricks in the latter text, which may or may not have fooled Miss Marple, are also played on Hercule Poirot.