The Warhammer 40,000 Codex books contain the complete rules for playing various armies in Warhammer 40,000. They also contain in-depth painting guides, army lists, and much more. Codex: Assassins is an expansion book for the Games Workshop Table Top game Warhammer 40,000. This book was published for the first time in 1999, and is for all editions of Warhammer 40,000. The book has 24 pages and the cover is printed in colour while the majority of the book remains in black and white, although there are several pages of colour images of miniatures. Contents Army List: This book contains a complete army list for using Imperial assassins in your games of Warhammer 40,000. Also includes background information and special equipment / wargear listings. Background: This book contains background information and fiction on the various assassins temples of the Officio Assasinorum, the sinister organization called upon by the Imperium to perform acts of execution upon those whom an all out attack is excessive, and where a shot in the dark, a quick blade or other method is preferred.