Remember im new to these case details. So what I say is just what im seeing.
If Parry was in it with Wallace then I agree with what Ged said. Why would Wallace name him to the police? makes no sense.
Parry could have done it alone ( or with others ) Apart from what Parkes said then is there anything else that links him to it? He may have been a bad lad but that dont make you a killer. How do we know Parkes was telling the truth? We only seem to have his word.
Is it true that the police tested Parry's car at Derby Lane Station? Did they find anything. Even if he had an alibi I would have thought with Parkes saying what he did then they would have grilled Parry.
Myself I have no idea who did it. When presented with what Ged and Mark have written I can blame many but dismiss them as not enough to go on as well. Its all very interesting. I have no idea and I guess the different views will still be going on in another 80 years.
Just one more thing. What if somebody unknown did get Wallace out the house on purpose then went to the house and killed Julia. They would have walked away as free as a bird first from the police and trial and second from those who have studied the case over the years. If that is the true then they comitted the perfect murder.
Im just addicted to all this now