I've thoroughly read Sandra Lean's two books now and I really can't see how this conviction is at all safe, indeed there is genuinely no evidence against Luke Mitchell.
The police seem to have jumped to the conclusion that he was the murderer right at the very beginning, because he discovered the body. They assumed he'd gone straight to the body hidden in the woodland strip because he already knew where it was. However at that point they seem to have been labouring under the impression that he was alone, when he was in fact with three members of Jodi's family. They also seem to have thought he was running around trying to mislead him when they were simply mistaken about where he actually was. He didn't go anywhere.
His story is that he walked up the path from the Newbattle end, with his dog Mia, and didn't see anything. when he got to the junction of the path (Roan's Dyke path) with Lady path, he met three members of Jodi's family, also out looking for her. They combined forces and set off back down Roan's Dyke path, the way Luke had come. Luke said that perhaps Mia (his dog) could find Jodi and did they have anything of hers to get a scent. They didn't and nobody ran back to her house (which was nearby) to get anything, but Luke said "Mia, find Jodi" anyway.
Janine Jones (Jodi's older sister) and her boyfriend Steven Kelly were at the front of the party and Alice Walker (Jodi's maternal grandmother) lagged a little behind. Mia ran into the cereal crop field on the left a couple of times and Luke followed but they returned to the path without finding anything. They passed a partial break in the wall on the right, and a little way past it Mia reacted and stood against the wall with her front paws up. Luke went back to the break in the wall and the dog seemed very interested. He handed the dog's lead to Alice and climbed the wall into the narrow strip of woodland. He turned left, because that was the direction of the spot where Mia had originally reacted. He found Jodi's body some way along (20 yards?) in the woodland strip.
The original statements from Janine and Steven confirmed what Luke said about Mia reacting to something on the other side of the wall. However these statements were never "adopted" and by the time of the trial the statements from all Janine, Steven and Alice all denied that the dog had done anything. Contemporary reports describe Luke as being shocked and "in an awful state" but later the story was that he was cold and emotionless. (In particular his first words, "I've found something" not mentioning a body were taken as being in some way sinister when it's quite likely he couldn't bring himself to say what he'd found.)
In true Perugia fashion the cops decided he was the culprit and he was the only one taken to the police station and stripped and searched and forensically sampled. The others were taken to a different police station and not searched. The police seemed just to be waiting for the forensics to prove it was Luke. However there was no DNA from Luke on the body. Instead there was DNA from semen from - Steven Kelly.
How the cops managed to get a conviction in this case is an abiding mystery, other than that (again in true Perugia fashion) they had fed the press with lurid stories about the evil dead-eyed schoolboy killer and the entire area was up in arms baying for his blood. Probably including at least some of the jury.
The police refused to believe Luke's mother Corinne about his whereabouts, and one small change to a statement from his brother Shane which was intended to be a clarification was seized on as proof that he "lied and lied and lied again". Meanwhile multiple major changes to the stories being told by Jodi's relatives were given a free pass. Because the cops decided not to believe Corinne and Shane they charged them with attempting to pervert the course of justice, but there was no independent proof that they were lying.
Because of some neighbours saying they smelled burning at two different times that evening the police decided that Corinne had burned the parka jacked they thought Luke was wearing in a sort of barbecue thing in their back garden. There was no parka - Luke had a parka which was bought
after the murder but had never had one before it. It's highly unlikely the back-garden burner could have obliterated all trace of a heavy jacket with zips and eyelets and so on, but the police took the burner and analysed it but found nothing. The whole parka-burning thing has not one shred of evidence to support it but it was part of the prosecution case.
The time Jodi left home was massaged earlier and earlier to allow time for her to have been murdered at 5.15, the only time it was possible to shoe-horn Luke in as possibly having had time to do it, and even then it was improbably tight. But other people were on Roan's Dyke path at that time and saw and heard nothing.
There was no forensic evidence at all linking Luke to the crime. Mia is a perfectly reasonable explanation for him having discovered the body, and indeed I can't see why a guilty Luke would have decided to stage-manage himself finding the body. Surely even a 14-year-old would have enough sense to try to be somewhere else when the body was found.
Even discounting the alibi given by Corinne and Shane, and a phone call to the landline in the Mitchell house which was answered by someone at about the crucial time, and yet neither Corinne nor Shane were in at the time, Luke could only have committed the murder at a time when it seems very unlikely the murder was actually committed, and the time window seems very tight for him to do what he was said to have done.
The rest is all the standard character-blackening that can be seen in the West Memphis Three case, although somewhat less extreme as Luke seems to have been a fairly normal boy. He happened to buy a magazine
after the murder which had a freebie Marilyn Manson DVD with it. It's not known if he even watched it, and it didn't have any reference to the Black Dahia murder on it anyway. On the basis of that, and a torn-up calendar that had been a gift that Luke didn't like, it was claimed that he was a goth who was obsessed with Marilyn Manson and the Black Dalhia murder and that he had tried to replicate that murder when he killed Jodi. Jodi's throat was cut but she had none of the characteristic injuries of Elizabeth Short. (In fact Jodi liked Marilyn Manson, Luke didn't, and he didn't seem to have any idea what the Black Dahlia actually was.)
I'm not saying Steven Kelly was the murderer. The whole case is such a mess of contradicting statements, phone calls where nobody knows who actually had whose phone, people who didn't come forward until quite late on in the proceedings which is odd if they had nothing to hide, and eyewitness identifications of people who weren't Luke being represented as if they were Luke. It's extremely difficult to know what to think.
I wish someone else here would get Sandra Lean's book (Innocents Betrayed) and have a read. I find it confusing because she's not trying to establish what actually happened and who probably killed Jodi, she's demonstrating that there's a huge mess of contradicting evidence, and several very plausible suspects with more evidence against them than there was against Luke, who were simply given a free pass.
Steven Kelly's semen was found on Jodi's body.
John Ferris was by the break in the wall, on the path, at about the time the murder might have been committed, and his behaviour is very suspicious. I don't think Ferris's DNA was found on Jodi though.
Jodi's own brother Joseph was mentally disturbed and prone to violent outbursts and he doesn't seem to have had an alibi.
Someone dubbed "Stocky Man" was seen apparently following Jodi down the path. It's known who he was but this part of the story confuses me more than most.
Mark Kane was also behaving strangely in the area that evening.
James Falconer's semen was found in a used condom discarded close to Jodi's body.
And I'm not even sure that's the lot.
It could be interesting to try to take the evidence in Sandra Lean's book, which is very detailed, and try to see if it's possible to tease a probable timeline/sequence of events out of it, if not actually identify who the most probable suspect is. But the book is only available in hard copy, not an eBook. The chapter on the case in her earlier book is online though,
https://paulviking.websitetoolbox.com/post/Infamous-Cases-4689531?trail=15