Death rises from the deep and tropical seas burn as the tide of war continues to rise…

Art Turner and the crew of USS Bull Shark are about to become the spearhead in a new offensive in the Pacific. As an island nation, the Empire of Japan depends on the sea to maintain its vital supply chain… and it’s into this jugular that Admiral Nimitz intends to plunge his knife.

On the other side of the world, Pat Jarvis is given command of his brand new submarine – the Megalodon. And like her sister, this new shark is being sent on a special mission. To find and sink a rogue Nazi spy ship commanding U-boat forces in the Caribbean. Venezuela provides most of Britain’s oil, but Caribbean refineries and their tankers are being slaughtered by the Kriegsmarine… and it’s up to Jarvis and Meg to stop them.

However, while the U.S. Navy and the OSS make their plans, so too do their enemies. The Nazis know of Jarvis and are planning to destroy him. Turner’s Japanese foes are gathering together to devise an ultimate plan to rid them of him and his meddlesome boat once and for all!

Will turner and Jarvis prevail in their ongoing fight… or will the Axis powers drive the final harpoons into the deadly steel sharks that hunt them?

Guns thunder and torpedoes scream in this latest WWII action thriller!