I can't really say much else without giving away serious spoilers that would ruin things for any who haven't seen the episode, but suffice it to say that the entire episode centers on Woodbury. We don't really see the group at the prison at all.
The Walking Dead: The Complete First Season [Blu-ray] --- [DVD]
The Walking Dead: The Complete Second Season [Blu-ray] --- [DVD]
My previous reviews for this series can be accessed by clicking the links below: