Young adult franchise hopeful The Mortal Instruments: City of Bones doesn’t open until August 23, but Constantin Films is already working on a prequel, reports Heat Vision.
The company has thrown into development Infernal Devices, an adaptation of the spin-off book series written by “Mortal Instruments” author Cassandra Clare, and has hired Stephanie Sanditz to write the screenplay.
“Mortal Instruments,” a best-selling series of fantasy romance books, centers on a young girl who discovers she is part of a hidden race of angels known as Shadowhunters locked in a battle with warlocks and vampires called Downworlders. “Infernal Devices” is set in Victorian England and sees a new teen girl plunged into a journey of adventure and self-discovery. The books feature the ancestors of many “Mortal Instruments” characters as well as some character overlap.
Three books, titled “Clockwork Angel,” “Clockwork Prince” and “Clockwork Princess,” have been published.