In 2008 scientist, sceptic and neurosurgeon Dr Eben Alexander fell into a life-threatening coma for seven days, after contracting an extremely rare strain of meningitis, which attacked his brain and shut his body down. Miraculously, within a month he was back to normal.
But it's what he experienced whilst he was in the midst of his coma that has changed his life forever.
Dr Eben claims he had visions of heaven and a near-death experience where he was taken into another dimension. He joins us live from America to discuss his out-of-body experience and to tell us about his new book The Map of Heaven, which looks at other near-death experiences and tales of heaven.