Halo: Legacy of Onyx, building upon the story of ONIRF Trevelyan (formerly planet Onyx) from the Kilo Five Trilogy and from Halo: Fractures short story Lessons Learned, is available at stores right now!
While you certainly do not need to read either to know what is happening in Legacy of Onyx, if you are interested in catching up prior to picking up a copy, check out Amazon or your local book store and dive in for some awesome Halo stories. And if you are like me and consume all your Halo books through your headphones, the Kilo Five Trilogy and Fractures (as well as Legacy of Onyx) is available in audio book form from Audible and other retailers.
Grim also had a few words about the newest Halo novel, so if you are interested, click on over to Halo Waypoint and read up in Golden Clouds. And now onto the blurb: