After Napoleon was defeated at the Battle of Waterloo in 1815, he was sent into exile on Saint Helena reduced from the most powerful figure in Europe to a prisoner on a rock in the South Atlantic. But the fallen emperor was charmed by the pretty teenage daughter of a local merchant, Betsy Balcombe. Anne Whitehead brings to life Napoleon's last years on Saint Helena, revealing the central role of the Balcombe family. She also lays to rest two centuries...