A man has been found guilty of raping and murdering childhood friend Keeley Bunker at Stafford Crown Court.
Wesley Streete assaulted and killed the 20-year-old after she trusted him to walk her back to her home in Tamworth, Staffordshire.
Streete, also 20, dumped Keeley's body face-down in a stream in Wigginton Park on September 19 last year, repeatedly returning to the scene to cover her up with tree branches.
He lied about what had happened, after returning with a friend from a night out in Birmingham to celebrate Keeley's birthday, changing his story four times before his trial.
Initially, he claimed he left Keeley to walk home alone, before later saying he "accidentally killed her" during consensual sex in the park.
The victim's uncle later found her part-submerged body later the same day during a massive search involving family, friends and police.
A jury took just over eight hours to convict the former warehouse packer.
He was also found guilty of two other counts of rape, three counts of sexual assault and a charge of sexual activity with a child, against three other victims, said to have happened in previous years.
Streete had denied any wrong-doing and claimed Keeley was "flirting" and "teasing" him as they walked home.
He said she had wanted sex, but said he "accidentally killed" her after wrapping his forearm around her neck.
But Keeley's injuries showed she had self-inflicted scratch marks on her neck, most likely from when she tried to prise Streete's arm from off her.
Police were able to pull apart Streete's lies using CCTV footage and GPS data taken from his own mobile phone.
It proved Streete was with Keeley in Wigginton Park in the early hours of September 19 and had repeatedly returned to where he dumped her body.
Footage was also shared with the court showing the two together in Snobs nightclub in Birmingham on the night of Keeley's death.
Giving evidence, the killer said: "I kept on lying to everyone. Now I'm telling the truth."
Senior investigating officer Detective Inspector Cheryl Hannan of Staffordshire Police slammed Streete's "audacity in his arrogance", accusing him of "playing the martyr" by claiming police were blaming him.
She said the force knew he had something to do with Keeley's disappearance early on because of his lies.
In the back of the police car after being picked up, he had protested his innocence and claimed he hadn't walked her home.
During the exchange, caught on a police body camera, Streete, who was sitting alongside his parents, said: "I just feel like I'm getting the blame.
"You said when I was at the house that all I needed to do was speak to the officer and then I could go and look for Keeley.
"And then you take my phone off me."
DI Hannan said: "I think there's some audacity in his arrogance there in playing the martyr - saying 'why are people blaming me when I left her at that phone-box?' knowing full well where she was and what he'd done and the efforts he'd gone to to conceal her, to delay people finding her, if ever."
Asked if she believed Streete was a sexual predator after he was found guilty of a series of assaults on other women, the officer added: "I think he's used his popularity to manipulate young women into situations where he thinks he can take advantage of them."