The Walking Dead (Volume 10) What We Become by Robert Kirkman.

"Things are tense in the group with the new arrivals but after dealing with a horrible situation, Rick and Abraham find a common bond. While passing close to Atlanta, Rick takes a detour with Abraham and Carl to check on some "unfinished business" and ends up bringing a new addition to the group. Dale, convinced he's found a safe place, is forced to abandon it when Rick et al return, running for their lives from a zombie herd. He's furious, convinced that Rick ruins everything and is always finding some way to endanger their lives. The thing is, he's not entirely wrong." 

5 Stars. 

Pros:  Showing more of Abraham as a character, getting his backstory, shows that he's not a bad person, he's just been forced to do bad things, the same as Rick. 

Cons: Morgan, Morgan, Morgan, I understand why you did what you did but...it's just going to end badly. 

Full Review: 

The crew hit the road with the new additions of Abraham, Eugene and Rosita. Things are tense at first, very tense. Devastated at the loss of her entire family, Maggie attempts suicide by hanging herself. While everyone things she's dead, Abraham says that they have to shoot her, to stop her from coming back. Rick pulls a gun on him and there's a stand off, but miraculously, Maggie wakes up. She doesn't want to talk about what she did and everyone more or less goes back to business as usual. 

Once it's clear that they've passed Atlanta, Rick wants to take a detour, needing to check on some unfinished business. While on the road back to Rick and Carl's old house, they're attacked at night. The men try to rape Carl and Rick tears them to pieces with his bare hands. The next day, Abraham explains how he lost his family. That they were hiding out in a grocery store with good people, neighbors, friends. And one day, when on a weapons run, something happened and those good people turned bad. They raped his wife and daughter. When Abraham found out, he killed the people who hurt his family, slowly, painfully and he was horrified at how much he enjoyed it. 

He and Rick find common ground in the fact that they've both killed and have no remorse. Even Carl adds his two cents in, saying that he doesn't regret killing Shane. That he wishes he could kill the man who killed his mom and sister. It seems that the hard-headed Abraham has a sore spot and he and Rick seem to come to an understanding. 

Once they reach their old house, it turns out that Morgan is still there but Duane, his son, has been bitten. Morgan's kept him chained up, convinced that he knows him, that Duane remembers him, that he's still the boy he was. Even though Rick tries to convince him otherwise, Morgan says nothing. He pretends to take care of the problem by shooting the chain that was holding Duane and joining Abraham, Rick and Carl. Duane wanders off, still undead and Morgan is despondent and sullen. 

While waiting for Abraham, Rick and Carl to return, Dale has taken it upon himself to find a more comfortable situation for himself, Andrea and the twins. It's an old farmhouse with lots of flat land that they can see for miles. He's convinced it's safe. But once Rick, Abraham, Carl and Morgan return, running for their lives and screaming that there's a zombie herd, the very thing Abraham had warned them about, right on their trails, they have to leave. Dale is furious, saying that it's all Rick's fault, that they could have been happy where they were but he leaves anyway.