In a universe where human genetic material is the most precious commodity, an impoverished young Earth woman becomes the key to strategic maneuvers and internal strife within a powerful dynasty…

Vatican investigators are sent to the British West Country to investigate paranormal activity, and they find the events are more disturbing than they first imagined.

Set between the events of Halo 4 and Halo 5: Guardians… Halo: Nightfall tells the dramatic story of legendary man hunter and Naval Intelligence Officer Jameson Locke and his team as they are caught in a horrific biological attack while investigating terrorist activity on the distant colony world of Sedra. As they unravel a plot that draws them to an ancient, hellish artifact, they will be forced to fight for their survival, question everything and ultimately choose between their loyalty and their lives.