2. The Lost Liner and the Empire's Gold

On 30 December 1915 the Persia, a passenger ship loaded with gold bullion bound for Bombay, was torpedoed by the notorious U-boat ace Max Valentiner, killing over ## people and sending the liner to the bottom of the sea. For 88 years, the wreck's whereabouts has remained a mystery. However, salvage experts Moya and Alec Crawford believe they can locate the Persia - and her precious cargo. 2/5.