Screen Gems has released a teaser trailer for The Mortal Instruments: City of Bones and we have it for you to watch. Although the movie is not due out until August 23, 2013, we actually get to see quite a bit of footage in this first trailer.

"Set in contemporary New York City, a seemingly ordinary teenager, Clary Fray (Lily Collins), discovers she is the descendant of a line of Shadowhunters, a secret cadre of young half-angel warriors locked in an ancient battle to protect our world from demons. After the disappearance of her mother (Lena Headey), Clary must join forces with a group of Shadowhunters, who introduce her to a dangerous alternate New York called Downworld, filled with demons, warlocks, vampires, werewolves and other deadly creatures. Based on the worldwide best-selling book series."

The Mortal Instruments: City of Bones was directed by Harald Zwart and stars Lily Collins, Jamie Campbell Bower, Jonathan Rhys Meyers, Jared Harris, and Lena Headey.

Source: MTV