The brilliant but obsessed Dr. Catherine Halsey has allied herself with fanatical Covenant commander Jul 'Mdama . . . and now a deadly reckoning awaits the UNSC Infinity. The thrilling sequel to Halo 4's Spartan Ops continues in this four-part story by Duffy Boudreau (BlackAcre, Bloodshot), and Sergio Ariño (Ms. Marvel)!