Mrs McGinty's Dead

'Mrs McGinty's dead!'
'How did she die?'
'Down on one knee, just like I!'
So goes the old children's game - sadly, things didn't end so happily for the real Mrs McGinty. She was killed by a crushing blow to the back of the head. Then the killer tore up the floorboards in search of ... what?
Could the answer lie in an article the deceased clipped from a newspaper two days before her death? With a desperate killer still free, Hercule Poirot will have to stay alive long enough to find out...
'So simple, so economical, so completely baffling. Each clue scrupulously given with superb sleight of hand!'
--Sunday Times