Fringe returns after a lengthy hiatus next week.

During "Inner Child," the first of six straight weeks of original episodes, Olivia befriends a mysterious mute child that's been holed up underground.

In a new interview, Anna Torv, who stars as Special Agent Olivia Dunham, spills a few Fringe secrets...

What will we start to discover about Olivia's past over the next few weeks?
We slowly start to discover... I never know what I can and what I can't say, but we discover some things that happened to her when she was really little that she doesn't really remember. You start to see the stories, or the lives of Peter and Walter [John Noble] and Olivia kind of begin to interlace a little bit. And you sort of see how their paths have crossed before.

Do you know yet who the Observers are and what their motivations are?
Do I know who the Observers are? Meaning where they're from or what their function is? No, but we're shooting, at the moment, the final episode, and we're starting to get more of a glimpse into what their function is.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.