If you need a book besides the bible, it ain’t Christian. There are a lot of great Mormons and Jehovah’s Witnesses are the meekest people I have ever met but that doesn’t make them Christian.
I thought you were talking about the link. You, if you are a scientist, would enjoy this book. Dr. Long talks about how the American Medical Association did not have much evidence about the afterlife and near death experiences. He did an exhaustive study and has a superb website with testimonies of people who actually died, floated above their bodies watching the medical personnel try to bring them back to life, go through a tunnel, see a bright, bright light, meet relatives who had passed away and told them to go back to their bodies because they still had work to do on earth.
Dr. Jeffrey Long became a believer in these NDEs after his through reseatch. Surely you have read about some of them.