Billy Blue Sky is the story of a 10-year-old boy named Billy Pearlman, nicknamed Billy Blue Sky by his mother, Linda. Billy is smart, charming and intuitive beyond his years. He also happens to have Down syndrome. After open heart surgery, Billy seems to possess a new power that has profound effects on other people, changing their lives completely.

John Koehler is an award-winning designer, entrepreneur, ministry volunteer, and author of five books. He served as director of Young Life Capernaum in Hampton Roads, a ministry that serves kids with disabilities. John received international acclaim in 1991 as Boomerang World Championship in Perth, Australia. He was also a member of the Foster's Boomerang 2000 Team, a touring troop that taught major league football and baseball athletes, and others, the gospel of boomerangs. In 2005, John published his first book, Bipolar by Koehler, about living with bipolar syndrome. Since then, he has given many talks to help people understand or survive the illness. In 2007, Koehler published Benjamin: the Road to Capernaum, a novel based on a crippled man in the Bible who was healed by a famous Jewish rabbi. His third book is My Inflatable Heart, a series of short stories about Capernaum and life recollections. John's latest book, The Case of the Russian Maids, the first of three murder mysteries that take place in Virginia Beach, is part of the Beach Murder Mysteries collection.