Claire Danes

The second season of Showtime's Homeland, will begin with Claire Danes' CIA agent Carrie Mathison having been in a psychiatric ward for six months after undergoing shock treatment at the end of Season 1.

But what will she remember from before?

A new teaser for the Emmy-nominated show's second season features Danes staring intently and occasionally twitching, as moments from the first season appear onscreen in quick, sudden flashes.

Homeland Scoop: Will Carrie Regain Her Memory?

We think the chances of her regaining her memories about Sgt. Brody (Damian Lewis) are pretty good. The clip concludes with Danes's ominous promise: "You are a traitor and a terrorist, and now it's time to pay for that."

Season 2 of Homeland premieres Sunday, Sept. 30 at 10/9c.