This is Perry's eighth book. He has started his ninth book, which will be the fifth of his Ralph Mullen adventures, which will be entitled I Die to Live. Perry has extensive knowledge in the area o...view moreThis is Perry's eighth book. He has started his ninth book, which will be the fifth of his Ralph Mullen adventures, which will be entitled I Die to Live. Perry has extensive knowledge in the area of sciences, which include environmental sciences, ocean sciences, astrophysics, and cosmology. He was born and raised in Allentown, Pennsylvania.view less