Another chance to see this three-part series offering an insight into the minds of serial killers Fred and Rose West, beginning with a look at how the Cromwell Street murders first came to light, leading police to uncover one of the biggest mass murder cases of the 20th century. When one of the West children told Social Services about the family 'joke' that sister Heather was buried under the patio, investigations began and the uncovering of a third leg bone indicated this was not the single homicide first anticipated. Eventually the shocking truth emerged with the discovery of nine dismembered bodies. Featuring archive news footage and accounts from leading psychologists