Back to the Future TP Volume 1 (Continuum Conundrum)

Spring, 1986. Marty McFly, depressed because life without Doc Brown is just plain boring, receives an alarming letter from Clara in 1893: Doc has disappeared in the time stream and Marty is the only one who can find him! The first ongoing BTTF storyline from IDW starts here! Collects issues #6-11.