I think the notion JB carried out the murders much earlier in the evening has too many obstacles to overcome:
1. June was known to go to bed after NB. June took a phone call from PB at 10 pm which lasted some 20 mins.
2. NB was last seen in the fields around 10.30 pm by Len Foakes and needed to be up again early in the morning to instruct others and get on with the harvest.
3. JB called JM at circa 10 pm and again this call lasted some 20 minutes. If he didn't call from GH where did he call from? On the basis he called from GH he then had to get to WHF, supposedly on his mother's bike wearing his wetsuit, enter WHF through a window with the rifle, or search it out, creep upstairs to shoot SC? June? Twins? and hope NB was otherwise engaged enabling him to lie in wait to ambush NB as he came up the stairs. The he did what for some 3/4 hours before phoning JM and the police? What advantage to him in delaying in this scenario which I find completely implausible?
Yes, and they’d have all been asleep in bed by midnight
Jeremy was just a 15 minute bicycle ride away, that’s hardly long
He could have easily got to WHF around midnight, killed everyone, left around 1am, and got home at 1:20am
That’s gave him an hour and half to possibly have another shower, put his clothes in the washing machine despite not needing to but just to be on the safe side...had a drink or coffees, probably a sandwich, dry his hair....the timing matches perfectly for when he rang Julie and said he hadn’t slept all night. That was the only truth he told her...he hadn’t slept as he’d been to a WHF and killed everyone.
Why would he tell the police he went to sleep at midnight (then changed it in his next statement to 11:30) but tell Julie he hadn’t slept at all?
C’mon....it’s too easy to see through his lies !