FREE Halloween Comic Book Day – October 28th The links in this post are affiliate links, and we will be compensated when you make a purchase by clicking through our links. Please see our disclosure policy. October 11, 2017 by Daphne Murray Comic book fans mark your calendar! October 28th is FREE Halloween Comic Book Day and participating comic book shops nationwide will be giving away free books and more. To find out if a store near you is participating, click here.