▁kill ▁her ▁and ▁lo cks ▁herself ▁in ▁her ▁bath room . ▁After ▁Col lie ▁tries ▁to ▁take ▁the ▁door ▁off ▁its ▁h ing es , ▁she ▁breaks ▁the ▁bath room ▁window ▁and ▁man ages ▁to ▁escape . ▁ ▁That ▁evening , ▁Jul ie ▁prepar es ▁for ▁her ▁date ▁with ▁Bud . ▁However , ▁her ▁mother ▁has ▁an ▁o min ous ▁pre mon ition ▁and ▁asks ▁Jul ie ▁to ▁stay ▁home , ▁to ▁which ▁she ▁agre es . ▁When ▁Bud ▁arriv es , ▁he ▁convin ces ▁her ▁to ▁walk ▁him ▁back ▁to ▁his ▁car ▁so ▁that ▁they ▁can ▁have ▁a ▁talk . ▁At ▁his ▁car , ▁Bud ▁tells ▁her ▁that ▁his ▁younger ▁brother ▁David ▁had ▁given ▁him ▁the ▁name ▁Bud ▁because ▁he ▁could ▁not ▁pron ounce ▁" Col lings worth ". ▁He ▁reve als ▁that ▁he ▁knows ▁Jul ie ▁was ▁involved ▁in ▁the ▁hit - and - run ▁and ▁he ▁begins ▁to ▁str angle ▁Jul ie . ▁Ray , ▁who ▁received ▁a ▁call ▁from ▁Barry ▁warning ▁that ▁they ▁were ▁in ▁danger , ▁appears ▁and ▁be ats ▁Coll ings worth ▁un cons cious ▁with ▁a ▁flash light . ▁The ▁police ▁arrive ▁after ▁being ▁sent ▁by ▁Helen ▁to ▁Jul ie ' s ▁house . ▁Jul ie ▁and ▁Ray ▁agree ▁that ▁it ▁is ▁time ▁to ▁conf ess ▁what ▁they ▁did ▁last ▁summer . ▁ ▁Background ▁and ▁publication ▁history ▁ ▁I ▁Know ▁What ▁You ▁Did ▁Last ▁Summer ▁was ▁first ▁published ▁in ▁October ▁ 1 9 7 3 ▁by ▁Little , ▁Brown ▁and ▁Company ▁in ▁hard cover . ▁Dun