The Story of Twins Exchanged at Birth and the Power of Nature and Nurture. Accidental Brothers tells the unique story of two sets of identical Colombian twin brothers who discovered at age 25 that they were mistakenly raised as fraternal twins - when they were not even biological brothers. Due to an oversight that presumably occurred in the hospital nursery, one twin in each pair was switched with a twin in the other pair. The result was two sets of unrelated fraternal twins - Jorge and Carlos, who were raised in the lively city of Bogot and William and Wilber, who were raised in the remote rural village of La Paz, 150 miles