Trailer! Zellweger and Cooper Take 'Case 39'

Real-life lovebirds Renée Zellweger and Bradley Cooper met on the set of the psychological horror flick "Case 39," in which Renée plays a social worker who fights to save a girl from her abusive parents -- only to discover that the situation is more dangerous than she ever suspected.

Watch the trailer!

"Case 39" opens in theaters Oct. 1.