'Walking Dead': New Trailer Highlights Drama Within the Prison (Video)

AMC

The drama on AMC's The Walking Dead isn't just the action-packed battle between Rick and the Governor.

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When the zombie drama picks up for the back-half of its third season on Sunday, new cast member Sonequa Martin-Green's Sasha -- Tyreese's sister -- learns the hard way that the prison's resident "Little Ass Kicker" had a tragic arrival.

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In a scene from Sunday's midseason premiere, Sasha discovers that Beth (Emily Kinney) isn't the baby's mother, and the heartfelt silence she receives from Hershel and company when she ponders aloud who the little girl belongs to speaks volumes about the losses the group has already endured.

Watch the new clip below, and be sure to check your DVR for the first two minutes from Sunday's midseason premiere, which aired during the Super Bowl on AMC. The Walking Dead returns Sunday at 9 p.m. on AMC.

Email: Lesley.Goldberg@thr.com; Twitter: @Snoodit