Ditch Killer Dennehy's 'Accomplices' On CCTV CCTV footage of serial killer Joanna Dennehy and her alleged accomplices apparently buying petrol to destroy evidence has been shown to a court. Dennehy, 31, Gary 'Stretch' Richards, 47, and Leslie Layton, 36, are seen pulling up at a Shell garage near Peterborough in a Vauxhall Astra and Ford Mondeo on March 29 last year before filling up a petrol can. Earlier that day, Dennehy had stabbed her final two victims - John Chapman, 56, and 48-year-old Kevin Lee - in the heart, Cambridge Crown Court was told. Her first victim, Lukasz Slaboszewski, 31, was killed about 10 days earlier, it is thought. In the video, Layton is seen getting out of the driver's seat of the Mondeo before filling the can with fuel. Co-defendant Stretch then gets out of the Astra and pays for the fuel at the counter while swigging from a water bottle. Dennehy remains in the Astra throughout. Dennehy admits to killing three men and dumping their bodies in a ditch Prosecutor Andrew Jackson said the Mondeo was found burnt-out on wasteland in nearby Yaxley later that night. The next day, Mr Lee's body was found by a farmer in a ditch near Newborough. He was wearing a black sequin dress with five "stab cuts," the jury heard. He had been covered with some kind of fuel or accelerant, but there was no evidence of any attempt to set fire to his body, according to a post-mortem examination. The bodies of Mr Chapman and Mr Slaboszewski were found in a ditch at Thorney Dyke on April 3. Between February 18 and 21 2012, Dennehy had been admitted to a psychiatric ward at Peterborough City Hospital, the court heard. She was diagnosed with a personality disorder and an obsessive compulsive disorder, Mr Jackson said. Dennehy, from Orton Goldhay, Peterborough, has admitted murdering the three men. She then travelled to Hereford where she randomly selected and repeatedly stabbed two men - Robin Bereza and John Rogers - in the street "for fun." Jury was shown video of Stretch paying for the fuel at the counter She has admitted their attempted murders and preventing the lawful and decent burial of all three murder victims. Stretch, real name Gary Richards, from Riseholme, Orton Goldhay, Peterborough, has denied three charges of preventing the lawful burial of all three men and two counts of attempted murder. Layton, from Bifield, Orton Goldhay, has denied perverting the course of justice and two counts of preventing the lawful burial of the bodies of Mr Chapman and Mr Lee. A third man, Robert Moore, 55, from Belvoir Way, Peterborough, has admitted assisting an offender and is also awaiting sentence.