In Her Smell, Elisabeth Moss plays a punk rock singer veering spectacularly out of control.

Moss’ character is Becky Something, a hard-living, hard-drinking – hard everything, really – addict trying to extricate herself from the self-destructive cycle of the music industry. And according to the actress, the role was “the hardest thing I’ve ever done.”

“I’ve done some really difficult things, challenging roles and challenging scenes,” Moss told The Hollywood Reporter at the Toronto Film Festival.

“But this was the hardest thing I’ve ever done,” she said. “It was not fun a lot of the time. It was hard to be in that head space, and hard to be in that person, with all that chaos and craziness. Some things are more fun to play than others. And this was difficult. At the end, I was incredibly fulfilled and happy that I’d done the role. But when we were shooting it, it was not easy.”

Now, you can watch the first trailer for the harrowing film:

Watch the trailer for the movie Elisabeth Moss calls the “hardest thing I’ve ever done”