A PRINCESS OF MARS–DETHRONED! Eldest child of her world’s ruling dynasty, Aria is also the daughter of the evil Black Sorcerer–one of the dreaded First Men of Mars–and has been imbued with his sorcerous might. Rebelling against her father’s tyranny, Princess Aria has joined forces with a human soldier and a savage Mock-Man, and now dares to challenge the First Men’s rule. Will Aria’s power be enough to tip the balance in John Blackthorn’s favor, and free her world–or will she betray the rebels to her father–or worse–and bring all they have fought for crashing down? BLACKTHORN: DYNASTY OF MARS, by award-winning author I. A. Watson (Robin Hood; Sherlock Holmes) and with a spectacular cover painted by Adam Diller, takes the saga of John Blackthorn and his brave companions to the next level–and beyond–with a grand adventure stretching down the centuries and across the war-torn face of post-apocalyptic Mars!