Martin Roy Hill is the author of the military mystery thriller, "The Killing Depths," and the award-wininng "Duty: Suspense and Mystery Stories from the Cold War and Beyond," a collection of new and previously published short stories. His latest mystery thriller, "Empty Places," was released in October 2013. All three of his books are available from Amazon and Barnes and Noble.

Martin spent more than 20 years as a staff reporter and editor for newspapers and magazines, before becoming a military analyst specializing in battlefield medical operations for the Navy. His freelance credits include Reader's Digest, LIFE, Newsweek, Omni, American History, Coast Guard Magazine, Retired Officer Magazine, the Los Angeles Times Sunday Opinion Section, and many more.

Much of his freelance work involves historical topics, especially military history. He was a lead contributor to the 1995 WWII anthology, "From Pearl Harbor to Nagasaki: America at War," published by the Retired Officer Association (now called the Military Officer Association). He was also a contributor to the 2013 Civil War anthology, "Gettysburg: Three Days that Saved the United States," published by I-5 Publishing.

Martin's short stories have appeared in such publications as Alfred Hitchcock Mystery Magazine, Plan B Mystery Anthology, San Diego Magazine, and San Diego Writer's Monthly. His book "Duty" was named the 2013 best short story collection by the San Diego Book Association. "The Killing Depths" was a finalist for the 2013 SDBA Sisters in Crime Mystery Award.