Actors Aidan Turner and CCH Pounder have joined the fantasy adaptation The Mortal Instruments: City of Bones for director Harald Zwart and Constantin Film.

Aidan Turner (The Hobbit: An Unexpected Journey) will play Luke Garroway, the surrogate father to the protagonist Clary Fray (Lily Collins). CCH Pounder (Avatar) portrays Madame Dorthea, a witch who is Clary's downstairs neighbor in New York City. The story centers on Clary, a young woman who learns she comes from a long line of demon hunters.

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They join a cast that also includes Jamie Campbell Bower, Jemima West, Kevin Durand, Robert Maillet, Robert Sheehan, Lena Headey, and Jared Harris.

Harald Zwart is directing from a screenplay by Jessica Postigo Paquette and I. Marlene King, adapted from the novel by Cassandra Clare. Production will begin next month in Toronto.