Sten Gabriel Bernhard Forshufvud (9 February 1903 – 25 June 1985) was a Swedish dentist and physician, and amateur toxicologist (expert on poisons) who formulated and supported the controversial theory that Napoleon was assassinated by a member of his entourage while in exile.[1] He wrote a book, in Swedish, about this in 1961, which was translated the following year as Who Killed Napoleon?[2] He later published his ideas in English in the 1983 book Assassination At St. Helena: The Poisoning Of Napoleon Bonaparte, written in collaboration with Ben Weider, co-author (with David Hapgood) of the 1982 book The Murder Of Napoleon, which also advanced Forshufvud's theories.