Robert Kirkman's The Walking Dead

Against all odds, against the wishes of her people, Lilly leads a ragtag group of true believers back across the impossible landscape of walker swarms, flooded rivers, psychotic bands of murderers, and dangers the likes of which she has never known. Along the way, she discovers a disturbing truth about herself. She is willing to go to the darkest place in order to survive, in order to save her people, in order to do the one thing she knows she has to do: Return to Woodbury.