The search for Dr Ruja Ignatova takes an unexpected turn when a story emerges alleging she's been murdered. But with with sightings of Dr Ruja still coming in long after her apparent demise, can it be true? We speak to the Bulgarian journalists behind the story and team up with BBC colleagues to...

How mysterious friends in influential places may have helped Ruja stay one step ahead. A massive revelation we only now know, but which Ruja knew years earlier. Who are they? And could they be helping her now? CREDITS Presenter: Jamie Bartlett Producers: Rob Byrne and Georgia Catt Original...