简介：MorseandLewisinvestigatethedisappearanceofteenagerValerieCravenwhovanishedsomesixmonthspreviouslywhilewalkinghomefromherexclusivegirlsschool.Morseisthethirddetectiveassignedtothecaseandisconvincedthatthegirlisbynowdead.However,thegirl'sparentsreceiveanote,purportedlyfromValerie.Suspicionfallsonanumberofpeople,includingfellowstudents,mennamedinherdiaryandsomeoftheteachersatherschool.Whenoneoftheteachersiskilled,themissingpersonsenquirybecomesamurderinvestigation.…