四签名剧情介绍

MissMaryMorstancontactsSherlockHolmesforhishelpregardingherfather,captainMorstan,whodisappeared10yearsago.Sincehisdisappearancesheannuallyreceivesavaluablepearlbypostfromanunknownperson.ThemysteryleadsHolmesanddoctorWatsonintoanintricateplotregardingalosttreasurebelongingtofourconvictsontheAndamanIslands