Actress Heather Graham couldn't wait for filming on `Flowers in the Attic` to end because playing a villain was so exhausting, but she also felt there was freedom in essaying a negative role.

The 43-year-old plays a brutal mother in the movie, and admits it sucked a lot of her energy to the point where she couldn't wait for filming to end.

"There's a lot of freedom to (playing the villain), because you're doing something you would never do in real life. But it's very dark. By the end of it, I couldn't wait to stop,` contactmusic.com quoted Graham as saying.