On January 28, 1742, a ramshackle vessel of patched-together wood and cloth washed up on the coast of Brazil. Inside were 30 emaciated men, barely alive, and they had an extraordinary tale to tell. They were survivors of His Majesty’s Ship the Wager, a British vessel that had left England in 1740 on a secret mission during an imperial war with Spain. Six months later, another, even more decrepit craft landed on the coast of Chile. This boat contained just three castaways, and they told a very different story. The 30 sailors who landed in Brazil were not heroes --- they were mutineers. The first group responded with countercharges of their own. As accusations of treachery and murder flew, the Admiralty convened a court martial to determine who was telling the truth.