All four Princess Gwenevere and the Jewel Riders and King Arthur and the Knights of Justice books in one volume--plus a never-before-seen crossover special! This special edition combines both volumes of Princess Gwenevere & the Jewel Riders and both volumes of King Arthur & the Knights of Justice into one large volume! Plus, for the first time ever, Merlin's heroes overlap in a never-before-seen crossover event.