The globally bestselling series now as graphic novels, with amazing new art from comic artists Kelly and Nichole Matthews! Mystery. Time-travel. Get whisked back to the time of medieval knights with Jack and Annie! A castle. A knight. A quest! When the magic tree house takes Jack and Annie back to the Middle Ages, they're looking for a knight. Instead, they find the Great Hall of a castle where a feast is underway. But Jack and Annie aren't exactly welcome guests . !.