Mall employee Elliot Dutton witnesses a woman being stabbed to death, only he cannot describe the killer due to having prosopagnosia, the inability to recognize faces. The team promises him police protection while they work out motive and killer, who lurks around. The Rizzoli family anxiously prepares fro a visit from Angela's bad cousin Carlo, a professional scammer, desperate to foolproof the house for one of his costly falls, but Maura has a more pragmatical approach.
—KGF Vissers