A teenage girl with a fascination for serial killers watched her favourite film Sweeney Todd as she and a teenage boy put the finishing touches to a meticulous plan for a brutal murder.
The following day, the girl lured transgender teenager Brianna Ghey to a park in Culcheth, near Warrington, having already tried and failed to kill the 16-year-old with an overdose of ibuprofen. In a frenzied attack, the young killers stabbed Brianna 28 times with a hunting knife, the first victim from their “kill list” of at least five child targets.
