More than 50 years ago, Alec Crawford and Simon Martin determined to make their fortune from ship salvage, exploring the remains of the Spanish Armada and the wreck of the SS Politician. They are sure they've hit the big time when they hear of the White Star liner Oceanic, wrecked in the Shetland Islands and considered "undiveable." The dangers are many and the rewards are enormous, but as Crawford explains here, they will also face a major courtroom battle.