Prove what couldn't happen and you are left with what must have happened to paraphrase Sherlock Holmes.
Start with the notion it is impossible to persuade a young woman to lie down and be shot in suicide pose beside the wrecked body of her mother, and after shooting her twins 8 times in the head.
Move on to the stupidity of shooting a woman before a 2 meter tall fit farmer from a doorway.
Eventually you arrive at what must have happened, and my reconstruction is as close as need be, ask Taff Jones please.
What is in the water up there? You can't hoodwink us in New Zealand.
You were hoodwinked over David Bain, but as there's 11,000 miles between us I'll let that suffice. As for Sheila let's get this right:
Saturday night she spent at a party staring at Julie and admiring her make-up. She had no interest in the twins, who jumped on her lap and felt so exhausted she asked Colin to take her home as she was too frightened to ask her brother. In the end he and Julie took her home and returned to the party.
The following day Colin drove Sheila and the twins down to White House Farm. Sheila never spoke a word in the car.
Monday a workman arrived at the Farm and described a happy, domestic scene with the twins playing normally. The housekeeper Jean Boutell noted no problems.
Tuesday Sheila accompanied her mother to Tiptree on a shopping expedition. She was described as "
vacant" by the shopkeeper. On the Tuesday evening June put Sheila on the telephone when Pamela called at 10pm but Sheila didn't say "
goodnight Auntie Pam" as usual. June said her daughter was tired and was off to bed.
Suddenly at some point in the night Sheila turns into some whirling dervish and remembers the gun on the settle that Jeremy, then June, then Nevill forgot to make safe. The bullets which Jeremy spilled in full view on the blue and white chequered worktop and whose remainder are too numerous to tally with the bullets used in the crime are again left out by June after her sister's telephone call and Nevill's late night walk with the dog.
Sheila takes up the rifle, creeps upstairs (before or after her period?) and shoots Nevill on the stairs or in the bedroom or both, shoots June in bed, kills her sons, manages to cut off a call from her father to Jeremy but not to Police, struggles with him in the kitchen during which a light fitting gets smashed, bashes him over the head with the rifle stock then writes a suicide note waiting for Police to arrive, shoots herself once in the kitchen then scampers back up the staircase and chooses to lie down next to June whereupon she decides to shoot herself again out of earshot of Police, who by this time have stormed the building. She has changed out of her bloodstained clothes, leaving her tracksuit bottoms and knickers to soak whilst burning her top and bra in the Aga and changing into her nightie for comfort..
https://youtu.be/Jbr4sSXHGRw