of the investigation. Grimson detailed the killing out to officers whilst being interviewed in December 1999. He admitted to getting a thrill from killing Wright. He said the thrill came from the power he had over the younger man and that the killing had no sexual element to it; however, he did admit that the feeling was "better than an orgasm". His second victim was 20-year-old Sion Jenkins who was killed a year later in December 1998. Jenkins was originally from Newbury and had been in the Royal Navy for a brief spell. At the time of his murder, he was working as a barman in the Hogs Head pub in Portsmouth and had met up with Grimson in a nightclub called Joanna's in the town. Jenkins was drunk, and both he and Grimson went back to Grimson's flat where Jenkins was forced to have sex after Grimson punched and threatened him. In the morning, Jenkins expressed his desire to leave and Grimson wished to recapture the same feeling of elation that he had when he murdered Wright the previous year. Jenkins was bound to the bath and severely beaten with a baseball bat resulting in his death. His body was dumped next to the A32 road at West Tisted. Conviction and life sentence Grimson was convicted in 2001 of killing Nicholas Wright and Sion Jenkins and the judge recommended that he serve a minimum of 22 years but also that he should never be released. This sentence was increased to 25 years by the then Home Secretary. In 2008, Grimson won a reduction in his life sentence by three years. This was to reflect the time he had spent on remand. The review noted his guilty plea, the time spent on remand and also his personality disorder. After assessment by psychologists, opinion was divided on Grimson's mental health. Whilst it was generally believed that Grimson was responsible for his actions, one psychologist labelled Grimson as being the worst psychopath that he had come across in 250 murderers. At the trial, Mr Justice Cresswell told Grimson "You are a serial killer in nature if not in number. You are a highly dangerous serial killer who killed two young men in horrifying circumstances." Other victims Police investigated the disappearance of naval rating Simon Parkes from HMS Illustrious whilst she was docked in Gibraltar in 1986. Grimson and Parkes both served on