Bamber would know NBs routine. I'm fairly sure I've read that NB liked to have a shower and a whisky before going up to bed.
So.. JB refuses to go out on the tractor again, causing the bad atmosphere the secretary sensed, he leaves but knowing roughly how long NB would be out on the tractor, he times his return..
Or.. did JB definitely call JM from Goldhanger? JB refuses to go out on the tractor, says he wants something to eat. Nevill storms out, JB commits the murders and calmly calls JM from WHF pretending to be at GH, keeping an eye on the time so he can hide upstairs and wait for NB.
I don’t think it happened like that, CS
There were people around at 10pm — they’d have heard something going on.
Plus, June’s sister Pamela rang her at 10:05pm, briefly spoke to Sheila, then June came on the phone and said Sheila had then gone up to bed. June probably went soon after that.
Meanwhile, Len was still working up until 10:30pm when he saw Nevill on the tractor, so Jeremy couldn’t have risked being seen at that time. Plus, a neighbour, Dorothy heard Jeremy “roaring off” like he always did in his car, at about 9:30pm
Then there’s the strange gunshot that was heard some time between 9:30 & 10.05pm — around the same time Jeremy would have driven past the house of the man who heard that single gunshot about 500 yards away. I suspect that was Jeremy having one quick practice shot as he hid the rifle to collect on his return.
He then phoned Julie about 10:30pm?
Nevill used to go to bed early as a rule, but because he had to collect the rapeseed as Jeremy had cleared off he probably showered about 10:45pm, maybe had his nightcap of G&T and a cigarette, then went up to bed at about 11:15.
Apparently, he went out like a light once his head hit the pillow, and he had slept in the bed as the pillow has his head imprint and his socks were on the floor.
Jeremy would have allowed time for all this, then after ending his call to Julie and setting the video to record programmes he had no interest in (and which he later tripped up about to the police), I bet he put his wetsuit on, put a jumper and jeans on top, cycled off at about 11:30, picked up the hidden rifle & cartridges, then continued the 500 yards or so through fields or unlit roads and then broke in through the window.
He probably killed them all around about midnight or 1am. That would have given him time to cycle back in just his jeans and jumper, then he probably paced around after having another shower to be on the safe side, and had to steel himself to make the phone call to the police. As he was nervous that’s possibly why he phoned Julie first. He needed a bit of normality, if that makes sense. He must have been hyper as hell.