Christopher Halliwell Taxi driver from hell!

In part 1 we look at the tragic murder of Sian O'Callaghan. Christopher prayed on young girls and being a taxi driver he had the power- You think you are safe leaving a Club and getting in to a taxi. Sian wasn't Christopher's only victim but it took a long time for the police to finally charge him and take him to trial for the murder of another young girl.