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简介：

ItreturnssixmonthsaftertheshockingfinaleofSeason3,andtheteammustovercometheirgrieftotackleadangerouscrimewave. 　　Thistime,theglovesarewellandtrulyoffforProfessorTinhislecturesandanewmusicalpursuit,romanceisverymuchaliveforhismotherAdelaideTempest(DelaTour),andthelinesbetweenprofessionalandpersonalbecomeblurredforth...