I've always thought he's guilty but I now have a couple of questions, after reading the Guardian piece Viva linked to.
"Last week, the Guardian was passed a letter, written by Sheila's ex-husband, Colin Caffell, to Nevill Bamber. In it, Caffell expresses deep concern about Sheila's mental state and asks his father-in law-to "try and convince Sheila that it would be better for her and the boys if they stayed with me most of the time". Ferguson says if Nevill had pleaded Caffell's case to Sheila, it could have had a "potentially catastrophic effect on her". As a result, he says, "she may have projected on to her father a concept of evil"."
Does this letter exist? If so why wasnt it presented in court? At the trial Bamber said his sister was distraught at the thought of losing her DC, but the prosecution said he was making that up.
And the discrepancy in the photos containing the "scratch" marks. Where those marks there on the night off the shootings, proving a struggle took place?
Mind you having written all that, I still think the forensic evidence shows that Shiela didn't kill her family.