ThomasP.Manning,businessmanandchessexpert,mysteriouslyshotinalockedroom,diesclutchingsomechesspieces.Policearebaffled,andfinallyabandonthecase.Sixmonthslater,victim'sdaughterLeahManning,stungbyascurrilousbookaboutthecase,enliststheaidofCharlieChanandNumber3Son.Additionalmurdersfollow,leadingtoaclimacticconfrontationina..eee