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简介：SherlockHolmeshasretired。ButwhenMacDonaldaskshimtotakeonanothercase,hesaysyes。Therehasbeensomemysteriousmurders,andtherearenovisiblecausesforthedeaths。AtthesametimeHolmesgetsthiscase,GrafUdoVonFelseckgiveshimanothercase:findayoungandmissingprincetopreventwarbetweenGermanyandEngland。ButVonFelseckisnotashonestas。。。…