Adam’s post below more or less covers it for me. It certainly makes alot more sense than any narrative involving Sheila.
“I re posted this scenario yesterday. A 'narrative' of how Bamber committed the massacre that matches the crime scene.
Cycle to WHF:
Evidence - Bike available. Easy journey. Unseen passing no dwellings. Quick journey. Bike taken to Bamber's cottage just before the massacre.
Get into WHF
Evidence - Bathroom window already loose or open. Quiet ground floor entrance. Bamber said he knew how to get in through this window. Bamber said found hacksaw by the window which was used on the window, was his hacksaw.
Pick up rifle:
Evidence ' Fully loaded rifle available as stated by Bamber.
Enter main bedroom:
Evidence - Two adults in this room who must be killed first as potential to provide most resistance.
Shoot an in bed June and Neville:
Evidence - 10 shots were fired in the main bedroom suggesting rifle was emptied in opening salvo. June and Neville shot in or near the bed.
Go to reload or chase Neville:
Evidence - Spare bullets found in kitchen. Neville found in kitchen after a kitchen fight.
Kitchen fight:
Evidence - Neville was brutally beaten there. Upturned and smashed kitchen items. Scratch marks on aga.
Shoot and kill a knocked out Neville:
Evidence - Four kitchen head shots into Neville.
Reload. Return upstairs:
Evidence - Further shots fired. All other shots upstairs.
Wake and persuade or force Sheila into the main bedroom. Or carry a sleeping Sheila. Or shoot an already awake Sheila who had moved into the main bedroom.
Evidence - Sheila found shot in the corner of main bedroom.
Shoot June once more:
Evidence - June had moved a few feet. Final head shot required.
Reload, shoot the sleeping twins:
Evidence - Twins shot 8 times in bed. Amount of bullets used shows two reloads carried out on the night.
Twins likely to stay asleep behind shut door in another room during massacre.Upstairs massacre had been quiet, with silencer on rifle. June and Sheila putting up minimal resistance. Nevill's resistance was downstairs.
Stage the scene:
Evidence - Gun and bible by Sheila. Silencer put in a box. Neville's body moved to give easy access to naked back. Nevill's back burnt to check for signs of life.
Exit out of kitchen window:
Evidence - Twenty sources say it can be banged shut from outside.
Housekeeper said items around the window had been moved.
Crime scene photo's show only vertical lock in shut position.
Cycle home:
Evidence - Bike found at Bambers cottage.”