Watch the first trailer of Bipasha Basu's next horror flick Alone. After her desperate attempts to look scared, and scare people in earlier films, the actor seems to have chosen another disaster to revive her fledgling career in specialising in supernatural thrillers.More than being scary, the film's plot will blow your mind: It is about two sisters, conjoined at birth. And here's the horror: One of them dies under mysterious circumstances, and after many years, the ghost of the dead sister comes back to haunt the surviving sibling.