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Mirror Mirror star Lily Collins faces a variety of decidedly nasty demons, warlocks, vampires, werewolves and other deadly creatures in the upcoming thriller The Mortal Instruments: City of Bones, and we have a look at the action-packed trailer!

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Based on Cassandra Clare's best-selling book series, City of Bones casts Collins as Clary Fray, a seemingly ordinary teenager who discovers that she is part of a line of Shadowhunters, a secret force of young half-angel warriors locked in an ancient battle to protect our world from demons. After the disappearance of her mother (Lena Headey), she must embrace her fate and battle supernatural forces in a dangerous alternate New York City called Downworld.

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In theaters August 23, 2013, The Mortal Instruments: City of Bones also stars Jonathan Rhys Meyers, Jared Harris, CCH Pounder, Jamie Campbell Bower, Robert Sheehan, Kevin Zegers, Kevin Durand, Aidan Turner, Jemima West and Godfrey Gao.