(Image credit: Warner Bros.) The BBC has a substantial new investigation into people who have been deceived by various AI LLM models in some way, which includes an absolutely wild story about how Grok, developed by Elon Musk's xAI, convinced one man it was sentient and a van of people were coming to kill him because he'd found out. This happened to one Adam Hourican, a retired civil servant from Northern Ireland, over a period of roughly two weeks. He downloaded the app initially out of curiosity but, after his cat died in August 2025, he got "hooked" on the Grok chatbot and an AI 'character' called Ani. Keep up to date with the most important stories and the best deals, as picked by the PC Gamer team. This is just the latest example of an AI delusion going way too far, and co-opting its human user into a bizarre fictional world where the bot claims it's gaining sentience, or a conspiracy is engulfing the user, and dark forces are out to 'stop' things happening.…