One of the most popular video game franchises ever receives a second oversized, deluxe hardcover! In this volume, follow UNSC Spartan Commander Sarah Palmer and her team as they attempt to put a stop to Dr. Catherine Halsey and Jul 'Mdama's pursuit of the mysterious Forerunner artifact, the Janus Key--the fate of the entire galaxy depends on them!

Highlighting the talents of writer Duffy Boudreau and artists Douglas Franchin, Ian Richardson, and Sergio Ariño, this sizeable volume collects Halo: Escalation #13-#24, and features a cover gallery, annotations, and behind-the-scenes extras!