Grey Knights: The Omnibus By (author): "Ben Counter"Genres:Fiction books Science Fiction books 40k books ISBN1844166961ISBN139781844166961AsinGrey Knights: The OmnibusOriginal titleGrey Knights: The OmnibusSeriesGrey Knights #1-3, Warhammer 40,000Omnibus edition collecting the novels, Grey Knights, Dark Adeptus and Hammer of Daemons from the popular Warhammer 40,000 Grey Knights series.