"Even the great detective Hercule Poirot harbours a deep and abiding fear of the dentist, so it is with some trepidation that he arrives at the celebrated Dr Morley's surgery for a dental examination.
Yet even Poirot could'n have guessed that only hours later he would be exmining the dentist, dead in his surgery - an apparent suicide.
But why would a successful dentist choose to kill himself on such a busy day ? Poirot turns to the other patients for answers - but there he find other, darker questions."

Just as good as all the Agatha Christie's book !