British backpackers Hannah Witheridge, 23, and David Miller, 24. From the moment their bodies were discovered on a Thai beach on 15 September last year, the investigation into the deaths of British backpackers Hannah Witheridge and David Miller has been a muddled affair. Information from the police has been hazy, contradictory and sparse. Miss Witheridge, 23, from Norfolk, and 24-year-old Mr Miller, from Jersey, were found bludgeoned to death on the southern island of Koh Tao. The first officers on the scene were local police with rudimentary training and apparently no idea how to seal off a crime scene, with tourists wandering through it for days afterwards. Thailand's best-known forensic scientist, Dr Pornthip Rojanasunand, whose institute was not allowed any involvement in the investigation, testified at the trial that the crime scene had been poorly managed and evidence improperly collected. Instead of limiting their comments to what they knew about the