This final adventure had occurred in less than 100 days, closing with Napoleon's second abdication on June 25th 1815, whereupon British forces forced him into further exile. Housed on St. Helena, a small rocky island well away from Europe, Napoleon's health and character fluctuated; he died within six years, on May 5th 1821, aged 51. The causes of his death have been debated ever since, and conspiracy theories involving poison are rife.