Through my line of work, I have seen many dead bodies under both suspicious circumstances and actual murder victims and been present during umpteen Home Office Post Mortem’s ( autopsies) and I have NEVER known a body to decompose this quickly, even under conditions where their death has been in front of an open lit gas fire or the height of summer..... It’s 8-12 hours generally for Rigor processes to take place where the muscles lactate and the body stiffens and unstiffen’s ( I don’t know the scientific process and labels, just the basics ) and there’s no way this would go from a death to skeletal in 24 hours IMOO