Lost Colony 

To fix a wrong from his past, a former conman needs to come up with £20 million — the price of a medical cure-all known as the Uber-Dukaten. For the funds, he turns to history: a sunken cache of Spanish gold. But a turn in the weather forces him into a hasty partnership with his beachside neighbor, a disgraced tobacco executive with money problems of his own. A psychological thriller in the manner of Fargo, Ripley, and Breaking Bad. 

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