Steve,,when you're planning a murder,,you don't tell the biggest mouth in the village.

If it was ever said at all that Jeremy " could kill his parents,etc ",,then it was the most unfortunate remark that he ever said,,,because ten to one,,if you've ever said anything at all on those lines and something goes wrong ( a coincidence ) like whatever it is,,happens,,,,then naturally the finger points at you.
As a for instance,,many years ago,,my friend and I were being bullied,,and I wished harm on the bully,,,and by a quirk of fate,,that bully was knocked over and died from her injuries.
How do you think I felt.? It was years before I got over it,,,so much so,that I still remember her name and can visualise what she looked like. I was about 11/12 at the time.
I got the fright of my life thinking I was responsible,,,but my friend and I were nowhere near when the accident happened.