It's no more c*** than any scenario you can concoct with Sheila as the perpetrator.
How about
Just after 3am he called Julie. He chose his words carefully in case anyone else should overhear but said enough to let the reality of what he had done sink in.
Noone believes that she would passionately embrace a killer of two children, so this part is plain wrong.
He then retraced his footsteps to the master bedroom, intending to finish setting the scene. To his shock he found his sister incapacitated but still alive. Quickly, he returned to the kitchen, loading a single cartridge into the magazine.
Upstairs once more, he crouched down and took aim. The bullet went into Sheila’s brain, killing her instantly.
Yet the blood staining shows she hadn't moved between shots. Gravity feeds the blood in the expected way for a one position death.
The terrible impact woke Nevill, who lurched out of bed. Jeremy turned the gun on his father, firing four shots that caught him on his left side: two bullets penetrated his forearm and shoulder, and two tore into his lip and jaw.Noone believes he would fire 5 shots to June leaving his father able. The reason she took 5 shots is because she was alone in the room and Nevill was downstairs. He raced up and took the face shots, turned and took the arm shots.
The commotion had also woken Sheila, who crossed the landing to her parents’ bedroom, drowsy and confused.Let us parse this then. He shot June first and took the real risk, that Nevill would attack. Of course he would, but this would be certain to wake Sheila, who was never going to be a compliant victim. There is no such thing, and is contrary to a plan. With hindsight you lot have created this catatonic robot to slaughter, forgetting she has a history of violence, and was off her meds. Can't you see what a stupid plan it would be, leaving the simplest explanation being there was no plan. I have detailed how I see Sheila doing this crime with no planning, just one sad circumstance rolling to the next till they are all at peace.
................................
I could go from point to ridiculous point, but I am wasting my time. You have all persuaded your prime minister the conviction is right and proper, so who am I to care?