Hello Steph
whilst I do lean towards Jeremy's guilt I always accept I could be entirely wrong. I have different thoughts on how the murders were carried out but I sometimes wonder if Jeremy totally brainwashed Sheila in to killing her parents with his backing she then had a shower whilst he started to set the scene he then double crossed her and shot her twice and maybe he killed her boys. This is the only explanation I can come up with to account for how clean Sheila was this may account for how he passed the polygraph test because although he was responsible for their deaths he was not involved first hand other than Sheila and as I said I am not sure about the wee boys. He then left through a window and went home to wait for the right moment to call the police. Think Scipio is going to wrap me up and throw me away

Jeremy brainwashed Sheila to kill everyone ? When did he do that ?
That must have why she let him into WHF at 2.00am. Jeremy then watched her do it, then double crossed her and killed her.
Wouldn't it be easier to do it himself ?
The most simple scenario, is almost certainly what happened.