Robert B. Marcus Jr. is a practicing radiation oncologist who also has a bachelor’s degree in physics. He has been a Professor at two major medical schools, and is listed in U.S. News and World Reports Best Doctors in America, as well as Castle Connolly’s Top Cancer Doctors and Castle Connolly’s Top Doctors in America. He has been president of FLASCO, the society of all the oncologists in Florida, and has authored or co-authored almost 200 medical journal articles and chapters. He has been selling science fiction stories since he was in college, when he made a sale to Analog Science Fiction/Fact. Since then he has published a number of other stories and a novel, with two forthcoming novels, one science fiction novel and one political thriller novel, The Far Side of Silence. He is a lifetime active member of Science Fiction Writers of America and a Member of International Thriller Writers. “Amazon Kindle Best Selling” author for his children’s book entitled, Proton Gator.