Beyonce’s acting style has always been a cross between a deer caught in headlights and a fish flopping out of water.

But she always works within the safety net of only portraying singers (”Dreamgirls,” “Cadillac Records”). That’s changing with her next movie, the PG-13 spring thriller “Obsessed.”

The trailer positions “Obsessed” as a “Fatal Attraction” meet “The Temp,” with Beyonce as the wronged wife. The flick looks perfectly suited and titled for straight-to-DVD consumption, except it has music’s It Girl, not to mention Idris Elba and Ali Larter.

Beyonce comes off as flat and monotone as always in the clip, but I’ll give this one a chance, just to see she and Larter’s knock-down battle scene.