The Red Scrolls of Magic is the sacred text of the Crimson Hand.
Contrary to its name, the Red Scrolls of Magic is in fact a large book. Though its magic-related content is unknown, the rest are made-up orders and commandments written by Magnus Bane to cater to his indulgences when he started the cult.
In 2007, one modified copy was left by the members in their base in Venice for Magnus and Alec to find, hidden behind the wall from which a portrait of Asmodeus hung. This copy is bound in deep crimson-dyed calfskin with gilt letters set into the cover. Its pages are vellum that has turned yellow with age. Isabelle Lightwood was also able to find a copy of the original manuscript of the book at the New York Institute.
- "Only the Great Poison, he who is handsome and wise and charming and handsome, can lead the faithful to Edom. So cater to the Great Poison with food and drink and baths and the occasional massage.
- "The prince wishes only the best for his children. Thus, to honor his name, there must be a hearth crowded with only the finest of liquors and cigars and bonbons. Tithes of treasure and gifts showered upon the Great Poison symbolize the love between the faithful, so keep the spirits flowing and the gold growing, and always remember the sacred rules.