The parents of a teenager murdered by a wanted sex offender have released harrowing DNA evidence in an attempt to silence online sleuths.
Leah Croucher's 2019 disappearance sparked a four-year search that ended when a builder discovered the 19-year-old's dismembered and badly decomposed body in a loft. Detectives named convicted sex offender Neil Maxwell as the prime suspect but said he killed himself two months after Leah was taken.
Family fights conspiracy theories
John and Claire Croucher felt they had to release details of Leah's murder to silence online conspiracy theorists. Despite police being confident Maxwell, who had a "predilection for young girls", was the killer, armchair detectives continue to torment Leah's family with claims he was a scapegoat. They are spreading conspiracy theories that she was killed by her brother, Haydon, 24, who took his own life before Leah's body was found.
Speaking ahead of a documentary about Leah's murder, her parents branded Maxwell an animal who should never have been free to walk the streets.
John said: "Over the years, even before Leah was found, people were online saying that Haydon had pushed Leah down the stairs and I'd helped him hide her body.
"Even now there are podcasts being made still asking if [Maxwell] or Haydon is guilty. It's disgusting. So it is important the forensic evidence is out there because there's so many people saying Maxwell is a scapegoat, that he's innocent.
"They've not seen what we've seen. What we've seen is horrific. No parents should have to read what we've had to read. It isn't just the forensics. It's his past as well. We have literally read that animal's life.
"And to me, it was important that the world knows what a monster he was. He wasn't the 'lovely guy down the pub'. He was an animal. There's no other way of phrasing it.
"What he did to my baby, beggar's belief. And it hurts when people are still out there saying, 'He's innocent', but at the same time they are quite happy to blame my son."
Forensic evidence revealed
Leah's sister, Jade, 32, added: "[Maxwell] didn't have a good bone in his body. He spent years of his life torturing, tormenting, raping and abusing multiple women and children. Me and my family cannot understand why anybody would want to create a narrative for such a bad person."
Paedophile Maxwell, 49, snatched, raped and murdered Leah as she made her way to work in the Furzton area of Milton Keynes on February 15, 2019. Police searched 3,500 houses but made just one cursory visit to the address where Leah's body lay undiscovered for three years and nine months.
Leah's family lived in hope she would be found, unaware Maxwell had cut up her body and left it stashed in bags in the loft of an empty house where he was working as a handyman while also wanted for another offence.
During the search for Leah, DIY sleuths posted wild online theories about what had happened to the Taekwondo champion. But even after her death, they have added to the family's grief with conspiracy theories that Maxwell was not responsible and it was a police cover up. Despite an inquest taking place, forensic details proving Maxwell was the killer have never been released to the public.
Impact on grieving families
Experts say so-called "online sleuths" and "armchair experts" spreading conspiracy theories online are making it increasingly difficult for police to conduct investigations. Other high-profile cases in which they piled misery on grieving families include those of Nicola Bulley, 45, who accidentally drowned in Lancashire in 2023, and Jay Slater, 19, who disappeared in Tenerife in 2024.
John, 52, a warehouse manager, said of the conspiracy theorists: "They haven't seen the forensic evidence that I've seen, that has been passed to my legal team. He packaged her up into three separate bags, with his hand prints on all of those bags."
Care home manager Claire, 51, added: "His fingerprints were on a saw, his DNA was in a bag with Leah's body parts, they said that if he had been alive we would have gone to court."
Maxwell killed himself in a bike shed two months after Leah vanished. Leah's parents said detectives presented them with cast-iron evidence proving he was the killer and said they read his self-pitying suicide notes.
Claire said: "We're just glad he's dead. We detest him. He's selfish, a chicken, a coward. The anguish he caused us for nearly four years to find Leah was torture.
"And based on his suicide note, I'd say he didn't even actually feel bad about killing Leah. He was more worried about having to go back to prison because he didn't like it there.
"There's no remorse in those notes for what he did. So, we are glad he's dead, because at least we didn't have to look at him at a trial."
Family's loss and official statements
Leah's disappearance was too much for Haydon, who was diagnosed as bipolar. He took his own life just one day before the nine-month anniversary of his half-sister's disappearance. His body was discovered by Jade and his mother, Tracey Furness.
Claire said: "Haydon was energetic, he never stopped. As a teenager, his nickname was 'Adrenaline', because from the minute he woke up to the minute he went to bed he was bouncing, happy.
"He loved computer games and Leah would just sit on the floor and watch him play computer games as a toddler. They were inseparable. They argued, but they were inseparable."
Det Supt Kevin Brown, the senior investigating officer from Thames Valley Police, says of Maxwell: "I'm quite confident that given the level of forensic material we would have had charges for murder and that he would have been convicted."
Jim Armitage, the family liaison officer, tells filmmakers: "There's nothing to suggest, in any way shape or form, that anyone else was involved. People need to stop speculating based on limited information."
The Search for Leah Croucher: A Parent's Nightmare episode one is on U&W on Tuesday, October 13 at 9pm, and episode two is on Wednesday, October 14 at 9pm. All episodes are also available to stream for free on U from October 13.
