Jemima West joins supernatural thriller

Newcomer Jemima West has joined the cast of the Screen Gems and Constantin pic “The Mortal Instruments.”

Lily Collins and Jaime Campbell Bower also star in the pic helmed by Harald Zwart.

Based on Cassandra Clare’s bestselling young adult book series, the story follows Clary Fray, a seemingly ordinary teenager who discovers she is the descendent of a demon-hunting clan.

Unique Features’ Bob Shaye and Michael Lynne optioned the series in 2009. The Unique duo will produce with Robert Kulzer, while Dylan Sellers will exec produce with Constantin’s Martin Moszkowicz.

The WME-repped West is coming off a recurring role on Showtime’s “The Borgias” and is best known for starring in the French TV show, “Maison Close,” which became the highest-rated Canal Plus show of all time, and is currently in its second season.

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