article_snippet: But the key to all of this was Kelsall's 2012 confessions that he had intrusive thoughts about killing 'a random' with a knife.
article_snippet: Chillingly Peter McGrath SC just happens to be someone who has expressed intrusive, recurring and persistent thoughts about killing someone with a knife on the way home from work.
article_snippet: It doesn't sit with a calculated killer,' his barrister Christopher Watson had said.