Julie reported what Jeremy told her. It does not have to tally exactly with the crime scene as there is nothing to stop him from embellishing, telling the bare bones or a complete pack of lies. So Robert Boutflour speculates that Jeremy rode a bicycle to the Farm-well wouldn't anybody speculate similarly given that it was a rural area that he either rode or walked there? The figure of £2000 was in Jeremy's mind as it annoyed him that he was indebted to his father for that amount. I'm reminded of the David Bain case in that a debt became a catalyst for the murders. As for the fingerprints, if a glove did come off in the kitchen struggle with Nevill( a claim exclusively made by Julie) then Jeremy would not want his fingerprints where they should not be, or obfuscating Sheila's when he pressed the gun into her hand in the bedroom and pulled the trigger.
I am prepared to admit that the lack of enthusiasm for Julie on the occasion of her 21st birthday on Bank Holiday Monday 26th August 1985 may have been the turning point that she fell out of love with him after almost two years and realized she had been his dupe, that he was incapable of loving anyone and therefore it was possible that he himself had committed the murders and not Matthew McDonald as alleged.