Jonny's boy-out-of-time adventure comes to an explosive end as he and the Quest family take on Dr. Zin one last time! But even if they can bring their old enemy down, how will they ever be able to return home? And even if they do find a way, will they be able to resist the urge to use their knowledge of what's to come to change history? Find out the shocking answers in Jonny Quest #5, delivered with preternatural panache by intrepid chroniclers JOE CASEY and SEBASTI N PIRIZ and burnished by brilliant covers from CHAD HARDIN, JAE LEE, TOM RANEY, and RICHARD PACE!