Halo: Escalation The Absolute Record Part 4 from Dark Horse comics.
“The Absolute Record” Part 4—On a hidden world, Spartan Commander Palmer and the fugitive Dr. Catherine Halsey go head to head for control over the ultimate trove of Forerunner secrets. The six-part sequel to Spartan Ops ratchets up to its explosive conclusion in this thrilling issue by Duffy Boudreau (BlackAcre) and Douglas Franchin (Person of Interest)."
Source: DarkHorse