This volume is one of Conan Doyle's appeals to public opinion, in this case calling for international intervention over the running of the Belgian Congo (modern-day DRC), which he called "the greatest crime in history."
- ISBN10 1506172563
- ISBN13 9781506172569
- Publish Date 28 February 2015 (first published 17 March 1909)
- Publish Status Active
- Out of Print 27 October 2016
- Publish Country US
- Imprint Createspace
- Format Paperback (US Trade)
- Language English