"Jerry Mitchell, now the commodore of submarine Development Squadron Five, is dismayed when USS Toledo is reported missing in Arctic waters, close to Russian territory. The vessel is captained by his former shipmate and close friend, Lenny Berg. Eager to investigate, Jerry convinces the Navy to redirect one of his squadron’s boats to find out what happened."--Amazon

Jerry Mitchell is on exercises off the coast of Pakistan when his submarine, the USS Michigan, is ordered to a rendezvous off the Iranian coast. Once there, disembarked SEALs---experts in seaborne commando operations---are to extract two Iranian nationals who have sensitive information on Iran's nuclear weapons program.

Following the events Jerry Mitchell encountered in Dangerous Ground, the pilot-turned-submarine officer is now a department head, the navigator, aboard USS Seawolf. Now on a mission deep in the Barents Sea, north of Russia, Seawolf explores the sea floor, part of a sophisticated reconnaissance plan that will watch the Russian navy as it trains for battle. Although well outside Russia's territorial waters, Seawolf is ambushed by Russia's newest submarine,...