Grant Blackwood (born June 7, 1964) is an American thriller writer and ghostwriter from Austin, Minnesota. He wrote the Briggs Tanner series. He co-authored with Clive Cussler Spartan Gold which reached number 10 on the New York Times Hardcover Fiction Best Sellers list. Blackwood spent three years as an Operations Specialist and pilot rescue swimmer aboard a guided missile frigate and is a veteran of the United States Navy. Source: Wikipedia (en)