Dr Harold Shipman, a respected GP, murdered some 250 patients. Despite suspicions raised by colleagues, it took years for the authorities to catch up with him. Murder by Medic reveals a shocking pattern of abusing trust

In little more than a year after Reta Mays started work as a nurse's assistant in the VA centre, there were 21 suspicious deaths. The FBI launched an investigation, leading to the exhumation of some of her victims.

Dr Bob Neulander found his wife, Leslie, covered in blood in the bathroom, having apparently fallen. Initially, her death was ruled an accident, but due to local rumours the DA reopened the investigation.