Being the first episode after the pilot one does not usually expect the show to be about any thing more than the characters and this one delivers just that.
It brings us more into the personal lives of our favorite characters and introduces a few more, including Nathan Stark. It's interesting to see how he immediately bumps ego's with Carter and Carter's reaction to the revelation that Ally is seperated from the man.
The 'main' story line of the Perkins and how Walter has seemingly come back from the dead sets us up for future storylines as well. The cheesey ghost effects used to portray the 'ghost' could have been done a lot better.