"Dark secrets and forbidden love threaten the very survival of the Shadowhunters in Cassandra Clare’s Queen of Air and Darkness, the final novel in the #1 New York Times and USA TODAY bestselling The Dark Artifices trilogy." - Goodreads
"The Shadowhunter's Codex. The Shadowhunter's Codex is a companion book to Cassandra Clare's The Shadowhunter Chronicles. ... The Shadowhunter's Codex is written in the form of an illustrated handbook: a facsimile of the one given to Clary Fray, the protagonist of The Mortal Instruments series." - Wikipedia