ArtteacherAbigailLincolnisfounddeadatthesixthformcollegewheresheworkedbyhandy-manHarryWebster，amanwithaconvictionforviolence，whohadrecentlybeensackedforharassingAbigailforbeingaLesbian.AtthesametimeCharlielearnsthatAbigailwasabouttoreporttheprincipal，RoryO \'安隆，forhavinganaffairwithstudentMelissaParkerwhilstRory \'sstepsonDylanhadbeensendingAbigailabusivetexts.MelissaiscaughtonCCTVdisposingofthemurderweaponbuttherewillbeanotherdeathbeforethepolicesolvethecase。