Fringe

What's the challenge of playing two characters (who are, sort of, one)?

Fringe's Anna Torv has taken on the challenge of playing two characters this season. While the Olivia we've known since Season 1 is trapped in the alternate universe — under the assumption she's the alt-Olivia because of brainwashing — Bolivia has infiltrated the Fringe Division in our universe.

Watch full episodes of Fringe in our Online Video Guide

Though Bolivia knows who Olivia is, there are still elements of what makes the original Fringe Division agent stand apart. "Olivia reacts always internally first, where Bolivia is a little bit more cocky," Torv says, noting that Bolivia is "not buttoned up" and is "more comfortable in her skin."

Check out how the 32-year-old Australian actress deals with both roles in this clip: