When Mark’s previous book, AGENT IN PLACE, hit the Publishers Weekly bestseller list this past year, PW highlighted his first-week sales increases over the preceding years—an upward trajectory of double-digit percentage growth for each new Gray Man book since 2013’s DEAD EYE.

Each Gray Man book receives stellar reviews with Mark being praised for his “high-octane storytelling” (Washington Post), described as “among the top authors of espionage” (South Florida Sun-Sentinel) and “the best in the business” (Suspense Magazine). The series has continuously drawn comparisons to the giants of the field including Brad Thor, Daniel Silva, and, of course, Tom Clancy. Certainly the Clancy comparisons are no surprise: Mark co-wrote Clancy’s final three Jack Ryan thrillers before the venerable legend’s death and then carried the mantle for another four novels.

For years, Court Gentry was the CIA’s best covert asset. Then, without warning, the agency put him at the top of its kill list. Court fled the country and became an enigmatic killer for hire known as the Gray Man. However, after a tense reconciliation, of sorts, Court begrudgingly finds himself working for his former government overseers.