She was a monster, sleek and gleaming, designed to strike without warning like the dreaded shark. She was the USS Mako, as fearless and bold as any submarine that ever prowled the blue Pacific. Her mission: seek out and destroy the hitherto invincible ships of the Japanese Imperial Navy - and revenge the earlier defeats of a long and dirty war. Here is the story of the men who pitted their lives against impossible odds in the most dangerous branch of the American armed services.

Shattered by the surprise attack at Pearl Harbor, the U.S. is rebuilding its fleet while the badly damaged Submarine Division Seven holds the line against the Japanese Navy. The loss of even one more submarine could be devastating - and every enemy ship that slips through means more lives lost. But Lieutenant Commander Jack Tremain is determined to whip into shape a boat that's returned from a hellish patrol and make the Japanese pay - even if this is his last mission ever.

Confident and strong willed, Kelly Maguire knew from a young age that he could accomplish great things. A constant and abiding love of the ocean would prove to be the making of him. When the call of war is heard in the early 1910s, Kelly knows that he must answer it. Enlisting in the Royal Navy, he hopes to win both the war and personal glory. But from the barbarous battles of Gallipoli to the nightmarish action at Antwerp, Kelly, along with his young shipmates, begins to learn the trials a sailor must face, trials that will forge him from a boy into a man.

October 1943: Lt. Commander Jack Tremain is back on duty with a new sub and a new mission. But when he spots the Shigure - the Japanese destroyer that sank his beloved first command, the Seatrout - he declares his own personal war on the dreaded ship known as the "Submarine Killer".

Under the leadership of her fearless skipper, Captain Gene Fluckey, the Barb sank the greatest tonnage of any American sub in World War II. At the same time, the Barb did far more than merely sink ships-she changed forever the way submarines stalk and kill their prey.

This is a gripping adventure chock-full of "you-are-there" moments. Fluckey has drawn on logs, reports, letters, interviews, and a recently discovered illegal diary kept by one of his torpedomen.

HMS Temeraire: latest and most advanced of Britain's nuclear submarines. When Temraire's trials are cut short and she is ordered to the Far East to reinforce the fleet against a threat from Red China, her captain, David Jermain, knows that this is no routine exercise in flag-waving. And once in Asian waters, he and his submarine find themselves involved in a hidden, undeclared conflict beneath the sea.

Below a dark and angry sea, men in the submarines of the British Navy prowl. Explosive spherical mines lie silently in wait for their weathered vessels. At any time, the abyssals of the Atlantic can be rocked by the terrifying din of a mine exploding and a boat imploding. Manning these cramped vessels is a fulltime hardship, with myriad risks and sometimes terrifying emergencies.

In November 1941, Lt Ralph Trewin, DSC arrives at Singapore as second-in-command of HMS Porcupine. To the shell-shocked Trewin, the gun boat and her five elderly consorts symbolise the ignorance and blind optimism he finds in Singapore.

Inside the opulent palaces and lavish mansions, the royal family is ransacking the country's dwindling coffers while the desert kingdom seethes with unrest. Appalled at his family's extravagant lifestyle, Crown Prince Nasir vows to end the careless and destructive rule and sets in motion a top-secret operation to destroy the Saudi oil industry and bankrupt the monarch. To do so, he must enlist the help of an ally, a naval power willing to help Sturn for a share of the wealth....

When Captain Guy Sherbrooke joins HMS Reliant in 1943, he knows he may be her last Captain. Sister battleships have been destroyed, and Sherbrooke cannot alter the bitter truth that there will be no half measures for HMS Reliant.