Napoleon Bonaparte died on May 5th, 1821 on the island of St Helena from complications of stomach cancer proven by autopsy. However, when analyses of trace elements on single strands of hair became available in the 1960s, it was found that some samples of his hair contained increased levels of arsenic which lead to claims that he had been deliberately poisoned. This book written by an expert toxiciologist and a surgeon/Napoleon scholar examines the proof for the diagnosis of stomach cancer. Also it reviews the evidence for arsenic poisoning and denounces this as a myth, based upon the absence of all the specific features and many of the cardinal non-specific features of arsenic poisoning, thus confirming that the Emperor died from stomach cancer.