Now that the cast of The Hunger Games is just about set, it’s time to move on to the next teen fantasy/adventure book series film adaptation: The Mortal Instruments. Lily Collins (Priest) is locked as the lead in the Scott Stewart-directed flick. The Wrap reports that Jamie Campbell Bower, Ed Speleers and Leebo Freeman all tested opposite Collins on the Sony lot last week.

Bower is somewhat of a veteran of teen books-turned-films, having appeared in both Twilight (as Caius) and Harry Potter (as Gellert Grindelwald). Speleers is best known for 2006’s Eragon and Freeman is a newcomer. The book series centers on 15-year-old Clary Fray who witnesses a murder only to discover that she has encountered the “Shadowhunters”, a secret tribe of warriors who are on a mission to destroy demons. Hit the jump for a synopsis of the first novel in The Mortal Instruments series.

Here’s the synopsis for The City of Bones:

When fifteen-year-old Clary Fray heads out to the Pandemonium Club in New York City, she hardly expects to witness a murder—much less a murder committed by three teenagers covered with strange tattoos and brandishing bizarre weapons. Then the body disappears into thin air. It’s hard to call the police when the murderers are invisible to everyone else and when there is nothing—not even a smear of blood—to show that a boy has died. Or was he a boy?

This is Clary’s first meeting with the Shadowhunters, warriors dedicated to ridding the earth of demons. It’s also her first encounter with Jace, a Shadowhunter who looks a little like an angel and acts a lot like a jerk. Within twenty-four hours Clary is pulled into Jace’s world with a vengeance, when her mother disappears and Clary herself is attacked by a demon. But why would demons be interested in ordinary mundanes like Clary and her mother? And how did Clary suddenly get the Sight? The Shadowhunters would like to know…

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