Let's not forget Ralph Neville who also worked late on the fields.I wonder if Jeremy remembers him still working after he'd left ? It was RN who then drove his tractor to Osea Park caravan site where he was staying , ( time ? )but why leave his campervan behind at WHF when he could have driven that back instead,or even stayed in it ? Wouldn't he have been the last to leave the premises ? Did he hear/see anything unusual ? Obviously not or we'd have heard.
It does state somewhere that after his supper,Neville went back out to the field again which could possibly have been after Jeremy had left. Which meant that Neville didn't go to bed at 10pm as someone had suggested.
Aside from that,a PC Wright, the coroners officerwho'd spent all day at the mortuary,was convinced that Sheila had been the killer because besides the scene suggesting that,he'd said that there was " evidence " to show that she was mentally unstable. Just what this " evidence " is,we don't as yet know,but chances are it could possibly come to light within the next submission.