2552: Absolution - Volume 3

Part three of a four-part crossover event.
2552: Absolution, a.k.a. Tell Me Why You're Here Chapter 20, a.k.a. Harbinger 2.
In the final months of the Human-Covenant War, as the Great Schism begins, and as the Halo array is discovered along with the Flood, ever-winding paths put familiar allies and enemies on a collision course.