Peggy Carter has not seen the last of Agent Carter's Dottie Underwood.

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 A product of the Red Room Academy, Dottie (Bridget Regan) proved a formidable enemy in season 1, and the Soviet assassin will continue to plague the SSR when Peggy (Hayley Atwell) trades the grime of the Big Apple for the glitz of Hollywood. At least Carter is now well aware Underwood is not the hayseed she pretended to be.

"Oh, she's a slippery b-tch," Atwell teased at Canada's Fan Expo, according to Comic Book Resources. "We haven't seen the last of her. Peggy has male baddies that she fights, but to have someone who is physically her equal -- she's a Black Widow, incredibly capable and very smart -- I think that shows some balance for Peggy, like a flip side of the same coin. You'll see more of her in Season 2."

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With Darkforce and Madam Masque about to enter the Marvel Cinematic Universe, how will Dottie manage to trip up the SSR this time?

Delve into season 2's new mystery when Agent Carter returns to ABC this winter. Click the video below to see a recap of season 1.