Before the latest episode of Marvel's 'Agent Carter' airs on February 17, fans can discover what will happen to post-World War II heroine Agent Peggy Carter as the summary for the upcoming episode was recently leaked online.

Marvel's 'Agent Carter' will air Tuesdays at 9:00 pm ET and can be watched online through live stream via the link provided below.

"Peggy is cornered and more vulnerable than ever as Leviathan makes their move against her. As the SSR zeroes in on Howard Stark, they may pay the ultimate price as they find their true enemy is closer than they realized on 'Marvel's Agent Carter'," according to the official synopsis for Episode 4.

In the upcoming episode, it is rumored that Peggy will battle Dottie Underwood, her next door neighbor is also a secret agent for the USSR spy agency, the Leviathan.

In a recent interview, actress Bridget Regan revealed what the fans of the series can expect to see her character Dottie finally battles Peggy in the future episode.

"I wouldn't say they are the same, but they would be a good match," said Regan to CBR News in a recent interview.

"I will say, the thing that Dottie took from Peggy's room is going to come into play."

Reagan also addressed the rumor if her character Dottie is related to future Marvel Superheroine and Avenger Black Widow (aka Natasha Romanoff), who was played by Scarlett Johansson.

"It was actually brought up because of my hair, of all things. I had red hair when I was starting on this project," said Reagan.

"No, there is no relation there."

Marvel's 'Agent Carter' airs every Tuesdays at 9 pm ET and can be viewed on the ABC TV network or online through live stream by clicking here.