Complex sentence: Scotland Yard Detective Robert Anderson nicknamed him "the Napoleon of the criminal world", This is widely considered the inspiration for Sir Arthur Conan Doyle's fictional criminal mastermind James Moriarty in the Sherlock Holmes series, whom Conan Doyle calls "The Napoleon of Crime".
Split into simpler sentences: Scotland Yard Detective Robert Anderson nicknamed him the Napoleon of the criminal world ", /". This nickname is widely known as the inspiration to Sir Arthur Conan Doyle's fictional criminal mastermind James Moriarty in the Sherlock Holmes series, whom Conan Doyle calls "The Napoleon of Crime".