Co-creator Bob Gale takes his most famous creations through new comic book adventures that expand the universe created by the blockbuster films! The secrets of Jailbird Joey threaten Marty and Doc-what did Uncle Joey do in the past that was so bad... and what does that mean for Marty in the present day of 1986? You can bet your bottom dollar that Doc Brown has a theory! Collects issues #18-21.