He had no choice BUT to stage a suicide, he couldn't exactly go back and unkill everyone.
You might have you own ideas, but if you document them here they are up for debate! If that 'little dig' is referring to me, you're quite a 'know it all' yourself or try to be and as for locking horns, I don't have horns - if you do, that speaks volumes!!
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A team of forensic scientists? This was 1985, the police did their own gathering and then sent of their evidence to an independent lab. They had their own scenes of crime officers. The role of SOCO later became a civilian role.
You don't see how the phone call puts Jeremy in the frame? I don't understand how you're not understanding. It's common sense Lookout. IF he was home at the time he received a call, then he couldn't be killing the family and Sheila MUST be guilty because Nevill mentioned that she had gone crazy and had the gun. If Nevill didn't call, then how did Jeremy know about the events at WHF - if he knew and there was no call, he HAS to be guilty. It doesn't depend how you look at it at all!! A call from Nevill = innocent, no call = guilty.
There were no " digs at you " at all,though if the cap fits,etc etc.

I was actually referring to the professional bods who I've come into contact with during my working life. Who are not always right,but never admit to their mistakes,some of which had been well covered.