Invisible WeaponsA classic crime novel by one of the most highly regarded exponents of the genre. The murder of old Mr Fransham while washing his hands in his nieces cloakroom was one of the most astounding problems that ever confronted Scotland Yard. Not only was there a policeman in the house at the time, but there was an ugly wound in the victims forehead and nothing in the locked room that could have inflicted it. The combined efforts of Superintendent Hanslet and