Renee Zellweger has signed on to star in the horror thriller flick Case 39 for Paramount Pictures.

The film centers on an idealistic social worker (Zellweger) who saves an abused 10-year-old girl from her parents only to discover that things are not as they appear, says The Hollywood Reporter.

The studio is looking for a director. Case 39, written by Ray Wright, is scheduled to begin shooting July 31 in Vancouver, Canada.