Even on days away from the set, the Girl on the Train star is always ready to tap into her acting skills. This time, it was to deceive Jimmy Fallon during a round of his Tonight Show's signature "Box of Lies" battle.
As the tradition typically plays out, Fallon and his guest sit across from each other with a barrier in between them. After selecting a quirky boxed mystery item, each player then has to describe the item they have to the other player.