If I'd shot someone,,then made up some cock and bull story,,,arrived with the police at the scene and suddenly realised that the person I'd shot wasn't dead,,,I'd have collapsed in a heap.
Jeremy had either nerves of steel,,,or he simply didn't do it. Nobody could endure the suspense of seeing a figure at the window,,sending for the firearms team,,,then extra reinforcements,,,,without it affecting you in some way if you were guilty. A complete nervous wreck springs to mind,,,but he wasn't,,,and not a scrap of psychopathy in sight.