The Blackthorn Key Cryptic Collection Books 1-4 (Boxed Set): The Blackthorn Key; Mark of the Plague; The Assassin's Curse; Call of the Wraith

Four thrilling books in the award-winning Blackthorn Key series are now available together in one action-packed boxed set—perfect for fans of Dan Brown!

Christopher Rowe was happy learning how to solve complex codes and puzzles and creating powerful medicines, potions, and weapons as an apprentice to Master Benedict Blackthorn—with maybe an explosion or two along the way. But when danger threatens London, Christopher must use every skill he’s learned to discover the key to a terrible secret ...