<Dd> Rick Grimes, a sheriff's deputy from Kentucky, is wounded in the line of duty and emerges from a coma to find the world overrun by the undead . He returns home to find his house ransacked and his wife and son gone . Rick travels to a military evacuation zone in Atlanta to find his family, but finds Atlanta has also been overrun . He is rescued by Glenn Rhee, who takes him to his small camp of survivors . Among them are Rick's wife Lori and his son Carl . Zombies (called "Walkers" in most of the series) eventually attack the group . Following the attack, Shane Walsh, Rick's friend and former police partner, tries to murder Rick because he's become obsessed with Rick's wife Lori . Carl shoots Shane . </Dd> <P> Volume 2: Miles Behind Us (Issues 7--12) </P> <Dl> <Dd> Rick becomes the group's leader . He and the remaining survivors leave Atlanta and travel across hostile territory in search of a safer refuge . The group meets Tyreese, his daughter and her boyfriend . Everyone takes shelter at Wiltshire Estates, a gated community, but are forced to leave when they stumble upon its zombie infestation . The group eventually finds shelter at a small farm after Carl is shot . The farm's owner, Hershel Greene and his family, are in denial about the walkers' nature and have been storing deceased loved ones and neighbors in their barn . Rick's group is asked to leave the farm and stumbles upon an abandoned prison, which they decide to make their home . </Dd> </Dl> <Dd> Rick becomes the group's leader . He and the remaining survivors leave Atlanta and travel across hostile territory in search of a safer refuge . The group meets Tyreese, his daughter and her boyfriend . Everyone takes shelter at Wiltshire Estates, a gated community, but are forced to leave when they stumble upon its zombie infestation . The group eventually finds shelter at a small farm after Carl is shot . The farm's owner, Hershel Greene and his family, are in denial about the walkers' nature and have been storing deceased loved ones and neighbors in their barn . Rick's group is asked to leave the farm and stumbles upon an abandoned prison, which they decide to make their home . </Dd>

What is the order of the walking dead novels