Dee knows what it's like to be accused of something you didn't do. So when young women go missing in her English town, she resolves to prove the innocence of the man falsely accused and track down the real killer.

After spending decades in a mental health hospital, Dee knows that people find her creepy. They tell her so. Once the reluctant star of an infamous documentary, she is trying to blend back into the outside world. But when a string of local girls disappear, only to be found dead days later, she becomes fixated on the case and decides to film her own true crime documentary.

There is a serial killer on the loose—the Righteous Wraith. Girls are being found one by one, their bodies gruesomely staged in innocent public spaces. With the killer taunting the police and the public's fear mounting, the armchair detectives begin pointing fingers at one suspect. But for Dee, something isn't adding up. She knows what it's like to be accused of something that you didn't do. She resolves to prove his innocence, unmask the real killer, and save the 13th girl. But who will believe her?