Tom Johnson was one of those extraordinary characters that history throws up in times of crisis. Born in 1772 to Irish parents, he made the most of the opportunities that presented themselves and was earning his own living as a smuggler by the age of 12. At least twice, he made remarkable escapes from prison. When the Napoleonic Wars broke out, his well-deserved reputation for extreme daring saw him hired–despite his by then extensive criminal record–to pilot a pair of covert British naval expeditions.
But Johnson also has a stranger claim to fame, one that has gone unmentioned in all but the most obscure of histories. In 1820–or so he claimed–he was offered the sum of £40,000 [equivalent to $3 million now] to rescue the emperor Napoleon from bleak exile on the island of St. Helena. This escape was to be effected in an incredible way–down a sheer cliff, using a bosun’s chair, to a pair of primitive submarines waiting off shore. Johnson had to design the submarines himself, since his plot was hatched decades before the invention of the first practical underwater craft.
The tale begins with the emperor himself. As the inheritor of the French Revolution–the outstanding event of the age, and the one that, more than any other, caused rich and privileged elites to sleep uneasy in their beds–the Corsican became the terror of half of Europe; as an unmatched military genius, the invader of Russia, conqueror of Italy, Germany and Spain, and architect of the Continental System, he was also (in British eyes at least) the greatest monster of his day. In the English nursery he was “Boney,” a bogeyman who hunted down naughty children and gobbled them up; in France he was a beacon of chauvinism. His legend was only burnished when, defeated, apparently conclusively, in 1814 by a grand coalition of all his enemies, he was imprisoned on the small Italian island of Elba–only to escape, return to France, and, in the campaign famously known as the Hundred Days, unite his whole nation behind him again. His final defeat, at Waterloo, left the British determined to take no further chances with him. Exile to St. Helena, a small island in the South Atlantic 1,200 miles from the nearest land, was intended to make further escape impossible.