Following a stunning decision by Rick on The Walking Dead Season 4 Episode 4, this AMC smash moves ahead on Sunday with "Internment."

According to the official network synopsis, the hour will focus on "assorted enemies" placing pressure on Rick and the group, teasing a "breaking point" to come for those in the prison.

That could mean pretty much anything, of course.

So let's get a bit more specific: we also know Hershel will continue to risk his life in order to help the infected on The Walking Dead Season 4 Episode 5.

Watch him do so in this clip:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.