Dr. Walter Semkiw is a Board Certified physician practicing in San Francisco. Previously, he worked as medical director for Unocal 76, a Fortune 500 oil company. He is also trained in psychiatry. He started researching reincarnation in 1995 and is the author of Return of the Revolutionaries: The Case for Reincarnation and Soul Groups Reunited. He is the author of Born Again, which is available in print internationally, and Origin of the Soul and the Purpose of Reincarnation, which addresses the big picture of why we reincarnate and the nature of the spiritual world. He has been featured on CNN and in Newsweek. He has been a speaker at the first four World Congresses for Regression Therapy, held in the Netherlands, India, Brazil, and Turkey. He has also presented at the Society for Scientific Exploration, which was co-founded by Ian Stevenson, MD.