Poirotisvisitedbyadistraughtgirl,NormaRestarick,whofearsshemayhavekilledsomeonebutrunsaway,tellinghim,"You'resoold",ratherthanexplainingfurther.Bycoincidence,Poirot'sfriendAriadneOliverlivesinthesameapartmentblockasNormaandhertworoom-matesandrecentlywenttotheirparty,whereNormawasdistressedwhenshewasofferedice-cream.Nor...