[en] [Reign of Four 01] • I Permuted Press
[en] Reign of Four II Permuted Press
[it] Una Traccia di Regalità Kopp Company
[en] Reign of Four IV Permuted Press
[en] Reign of Four III Permuted Press
[en] Reign of Four · I Permuted Press
[en] Assassin · the Terrifying True Story of an International Hitman Apostrophe Books
[en] The Riddle of Ramsey Halls Broomstone Books
[fr] [Picturesque 06] • Remembering Robben Island Struik Travel & Heritage (Random House Struik)
[it] [Hap e Leonard 01] • Una stagione selvaggia Einaudi
[en] [Reign of Four 01] • I Smashwords Edition