Evil lurks in the darkness between the stars. Will you face it? The Outer Reach, a supplement for Deathwatch, explores the worlds beyond the grasp of the Achilus Crusade, including those held by the ancient Necrons. Meanwhile, this arcane tome gives players and Game Masters never-before-seen access to the enigmatic Dead Cabal, a mysterious circle of warrior-scholars who have devoted their lives to fathoming the unfathomable. Bring the light of the God-Emperor to the dark corners of the Jericho Reach!
More useful supplementary details; however, shorter than the other background books. While the work tries to be coy about whether there really are Necrons and suggests that the GM could do something differently, it gives no alternatives and forces one in that direction. Furthermore, the details about the Necrons differ from my last reading of the Necron Codex.