This could have been discussed here at some point, but I haven´t seen it.
My question is this, when Jeremy had to use two shots to kill Sheila, why did he stage her death as a suicide? It could have been his plan originally, but why didn´t he abandon that plan when he had shot her twice? What killer would shoot their victim more than once, then expect that, yeah, I´ll make it look like she killed herself!
Why stage the Bible, why hide the silencer, why fake the phonecall from Nevill, thereby narrowing the possible culprits down to Sheila and himself? Why not keep it open to more than those two by NOT staging a suicide?
All this comes across as impossibly stupid!