Someone We Know

"Thisisaverydifficultlettertowrite.Ihopeyouwillnothateustoomuch...Mysonbrokeintoyourhomerecentlywhileyouwereout."Inaquiet,leafysuburbinupstateNewYork,ateenagerhasbeensneakingintohouses--andintotheowners'computersaswell--learningtheirsecrets,andmaybesharingsomeofthem,too.Whoishe,andwhatmighthehaveuncovered?Aftertwoanonymouslettersarereceived,whispersstarttocirculate,andsuspicionmounts.Andwhenawomandownthestreetisfoundmurdered,thetensionreachesthebreakingpoint.Whokilledher?Whoknowsmorethanthey'retelling?Andhowfarwillalltheseverynicepeoplegotoprotecttheirownsecrets?Inthisneighborhood,it'snotjustthehusbandsandwiveswhoplaygames.Here,everyoneinthefamilyhassomethingtohide...