Sentinel

Matthew Dunn's second Spycatcher novel, Sentinel, features former British M16 officer turned spy Will Cochrane as he infiltrates a secret Russian submarine base to prevent a potential war. Drawing on his extensive real-world espionage experience, Dunn delivers a compelling blend of authentic spycraft and gripping action. Fans of international thrillers by authors like Daniel Silva and Vince Flynn will find themselves captivated by this high-stakes espionage adventure.