导演：
Phil Rosen,
主演：
Sidney Toler,Mantan Moreland,Edwin Luke,
评价：
EccentricscientistHarperlivesinaspookymansionwithallthetrimmings:hiddenlab,secretpanels,inscrutablebutler,andgreedyrelativeswithunusualtalents.WhenHarperseemstobemurdered,CharlieChan(withtheuninvitedhelpofNo.4son)triestoanswersuchquestionsasWhere'
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