Bloodletting
Otis, the hunter that accidentally shot Carl, helps Rick to bring Carl to a farmstead owned by veterinarian Hershel Greene, who stabilizes Carl but needs further medical supplies to heal him. Shane and Otis leave to a walker-infested school to find supplies. They do so but are caught and attacked by the horde.
With Hershel's surgery on Carl successful, Hershel tells Rick that his group should leave his farm once Carl is well enough, but Rick convinces him to allow them to stay if they follow Hershel's rules. The survivors attempt to remove a walker from the farm's well water. Glenn and Hershel's daughter, Maggie, begin a romantic relationship, while Lori discovers she is pregnant.
Chupacabra
Daryl continues to search for Sophia, despite Rick and Shane arguing whether it is pointless and Hershel becoming more unnerved by the group's presence. As Glenn's relationship with Maggie continues in secret, Glenn offers to meet Maggie in the barn's hayloft, and Maggie is too late to stop him from discovering the barn is filled with walkers.
Glenn reveals the presence of the walkers in the barn to the rest of the group, and Rick confronts Hershel about it. Hershel tells Rick their group can only stay if they promise not to kill any walkers, and takes Rick out to demonstrate how to capture them. When they return, Shane becomes enraged, and releases the barn's locks, letting the walkers trickle out, and the group is forced to kill them. One last walker appears Sophia. Rick is forced to shoot her in the head.
Three other men arrive at the bar to investigate the gunfire, and Rick, Glenn, and Hershel attempt to sneak away. Their activities have lured walkers to the town, and in their haste to escape, one of the three men, Randall, gets his leg impaled on a fence. Rick is unable to leave him behind and helps to free him, taking him with them back to the farm. The other survivors at the farm start to recognize Shane is becoming more unhinged.
Judge, Jury, Executioner
Randall is kept in custody, and they learn his group would be dangerous to bring to the farm, and that letting Randall live to reveal the farm's location would be a risk. Dale tries to calm tensions reminding everyone about their humanity and warning them the group is broken. Carl attempts to kill a walker in the forest, but it scares him away. Shane, Rick, and Daryl take Randall out to the barn to execute him, but Ricks stops when he sees that Carl was watching. Later, as Dale paces on the outskirts of the farm, he is mortally wounded by the walker Carl failed to kill. Daryl dispatches the walker before mercifully killing Dale.
Better Angels
As Dale is laid to rest, his advice to the group sits heavy with Rick, and he decides they should spare Randall's life. However, Shane secretly takes Randall deep into the woods and murders him, then returns and claims Randall escaped. The group searches for him, and Shane uses the opportunity to confront Rick at gunpoint, intent on killing him. Rick, after trying unsuccessfully to calm Shane down, is forced to stab him to death, unaware Carl is watching nearby. Carl holds his gun at Rick but uses it to shoot Shane, who has reanimated as a walker, in the head. The gunfire draws a horde of walkers to the farm.
Hershel's farm is swarmed by walkers and overwhelm the survivors, forcing them to abandon it, bringing Hershel, Maggie, and Beth with them. After regrouping, Rick is forced to tell them what Jenner told him; they are all infected with the walker virus and will automatically become walkers upon death, regardless of how they die. He takes charge of the group to find them a safe haven. Andrea is separated from the others during the evacuation from the farm but found by a mysterious hooded person, who has two armless walker pets and wields a katana.
Added to
list by jordanwiles94