Watch Murder Sisters (2011) Official Trailer

After 20 years in prison, the former angel of death at Lainz hospital has been released, and she now works in the Prater amusement park, at a restaurant that specializes in roast knuckle of pork. Observing the guests and how they behave reawaken old emotions, and she poisons a pork knuckle to punish the happy people. The movie audience can use their remote control devices to decide who dies.