Our first book of the year picks up where we left off after Last Light. We start off with “A Necessary Truth” from Fractures, a story of Veti Lopiz, the Gao Inspector who has taken the offer with ONI and is now training with her Ferret team of Spartan III Gammas. Following this interlude, Retribution picks up with the Ferret team investigating the death of a UNSC Fleet admiral and the kidnapping of their family. The entity behind it all is up to her team to discover as their findings lead to even more questions.