Unique Features' Bob Shaye and Michael Lynne are teaming up with Constantin Films to develop an adaptation of The Mortal Instruments, the fantasy book trilogy by Cassandra Clare.

According to Variety, Jessica Postigo (Operation Checkmate) will write the script that is based on the novels "City of Bones," "City of Ashes" and "City of Glass."

The story revolves around teenager Clary Fray's search for her missing mother, which leads her to a city filled with mysterious fairies, raucous warlocks, vampires and other demons.

No production date has been set.