War has brought Britain to the verge of bankruptcy. Her debts to America are crippling. Her precious supplies of weapons and fuel are running desperately low. Her last hope is gold -- L42 millions of it, held in a bank vault in Pretoria, South Africa. Only one man can bring that gold to Britain: Robert Garrard, captain of the Tulsar. But lying in wait to intercept him is Germany's newest submarine U-330, captained by Kurt Milland, a pre-war colleague of Garrard's -- and handpicked to watch his every move...

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