A successful civil rights attorney, Andrea was on a road trip with her younger sister Amy when the zombie apocalypse occurred. They were rescued by Dale and lived with him in his RV.

Andrea is headstrong, opinionated and extremely protective of Amy. But when Amy is killed in a walker attack, Andrea becomes distraught, lamenting to Dale that “there’s nothing left,” and opting to stay inside the CDC as it self-destructs rather than live on. Dale, however, convinces Andrea to leave the building by vowing to stay as well.

“You took my choice away,” she later tells Dale, explaining she left because she didn’t want his blood on her hands. Walking through the woods with Daryl, however, she admits, “I don’t know if I want to live, or if I have to, or if it’s just a habit.”

Andrea’s new lease on life comes with a desire to protect herself and the group, which she accomplishes by forging a friendship with Shane. He, in turn, teaches her everything from gun maintenance to sharpshooting, at which she excels.

Although Dale disapproves of her relationship with Shane, Andrea sums up her admiration for him, declaring, “He’s not a victim.”

Andrea’s relationship with Dale, on the other hand, never fully recovers from her suicide attempt -- a fact that haunts her after Dale is brutally killed by a walker. “I have my regrets,” she admits to Glenn, “but I think he knew how much we cared for him.”

Never one to shy away from a fight, Andrea is instrumental in defending the group against a herd of attacking walkers one night, but in the ensuing chaos, she gets left behind.

Alone in the woods and out of ammunition, Andrea is about to be bitten by a walker when its head is sliced off.

As the walker's body slumps over, Andrea sees standing before her a hooded stranger wielding a katana sword.

Video: Who Is Andrea? »