The Ghosts of Division X follows Frank Stryker into the shadowy world of 1947 military intelligence, where an off-the-books unit known only as "Division X" has vanished after a classified operation near the Nevada desert. When a surviving courier turns up in Springfield with half-burned documents and a warning that someone inside the government wants Frank silenced, Stryker and Bear are pulled into a maze of buried wartime experiments, missing soldiers, and a trail of coded messages pointing toward a cover-up bigger than any case he's handled. As the ghosts of the unit close in, Frank realizes this isn't just espionage - it's a reckoning with secrets America was never meant to know.