Los Angeles: Emily Blunt may have played action-heavy roles in the past, but the actress says her titular role on "The Girl on the Train," is "the most challenging thing" she has ever done. The 32-year-old actress said she was pulled into the story's "very damaged" protagonist.


Emily Blunt. Pic/Santa Banta

"I just love that it's about addiction and loneliness and voyeurism and what we think we see and don't see. I think it's very relatable. We've all ridden the train to work and wondered about the lives of the people on the train, and I think that people relate to that," Blunt said.