A hunter killer is a submarine designed to pursue and attack enemy submarines and surface ships using torpedoes. This book follows the careers of four daring British submarine captains who risked their lives to keep the rest of us safe, their exploits consigned to the shadows until now. Their experiences encompass the span of the Cold War, from voyages in World War II-era submarines under Arctic ice to nuclear-powered espionage missions in Soviet-dominated seas.

A brilliant deep dive into submarine warfare from ancient Greek divers right up to the current nuclear fleet - revealing some of the navy's deadliest secrets along the way.