What is it like to come back from the dead? That's the haunting question at the heart of a major new documentary. And here five British survivors share their experience - from a ghostly 'Third Man' to a comforting visit from their late grandma Jill Foster spoke to five people who are convinced that they saw life after death What happens to someone after death is one of life's great unanswered question Steven Robinson, 57, claims a shadowy figure led him back to consciousness Molly Murray, 53, claims she saw herself lying in a hospital bed through a light