Facebook stalker 'murdered' ex-girlfriend - Telegraph Mills admits killing Miss Smith but denies murder on the grounds that he was suffering from an abnormality of mental functioning at the time, which the prosecution rejects. Ms Johnson said: "The prosecution case is that the defendant killed his ex-girlfriend not because of an abnormality of mind but because he was jealous and angry with her." She said it was up to jurors to decide if this was a case of "murderous jealousy." Miss Smith had been in a relationship with Mills from 2002 until 2006, and they remained in touch after breaking up. She began seeing another man, Tony Hersey, but Mills remained in "relentless" contact with her, the court heard. Ms Johnson said: "It was obvious to Mr Hersey that Charlie Manning was in fact the defendant using another name. Lorna Smith, who perhaps may have been a little naive, she would not believe this. Mills had a "psychological grip" over Miss Smith and asked her to help him with court paperwork at his Brixton flat on February 2 last year, jurors were told. Within 20 minutes of her arrival he had murdered her, it is claimed. Mr Hersey later tried calling her mobile phone but could only hear loud music as if it had been left propped against a speaker, the jury was told. Shortly after 5am the next day, Mills arrived at St Thomas' hospital where he told staff: "Once I've told you what I've done you're going to have to call the police." He said "Stan hates her, he killed her," and "Stan is in my head." Prosecutors claim that the killing was planned, and jurors were given details of Mills' movements around London after the killing, including leaving two bags in the basement of flats in Hammersmith, west London. Ms Johnson said: "His movements after the killing are relevant because they show, amongst other things, that this was a planned killing. The two bags full of his belongings which he subsequently left in the basement area in Hammersmith, they were certainly going away bags and had been packed and made ready before he killed Lorna Smith. Mills also "rifled" through Miss Smith's handbag after he murdered her and took her purse and mobile phone, the court was told.