Forensic Files: The Murder Manual of a Teenage Killer

On the 14th March, 2004, 84-year-old Anne Mendel was brutally murdered in her own home. Crime Scene Investigators recovered a tiny amount of human tissue from under Anne's fingernails. DNA in the evidence sample was matched to Kemi Adeyoola - a 16-year-old London teenager who had written a chilling guide on how to commit a murder. Using many forensic techniques, the police and investigators set about proving that Kemi's "murder manual" was not just a work of fiction, but a terrible plan that had resulted in a real-life murder...