AfterDr.WatsontestifiesattheinquestoftheHonourableRonaldAdair’shottodeathafterreturninghomefromhisgamblingclub’heisfollowedbacktohisofficebyaneccentricbooksellerwhorevealshimselftobeHolmesindisguise.Aftertheinitialshockwearsoff’HolmesexplainsthathedidnotdieinthefallthatkilledProfessorMoriarityintheirfamousencounter...