Nice episode. Compelling drama that really puts Walter's Prime wife through the ringer having to keep lying to peter. The two children who played Olive and Peter were good, but I found it difficult to believe that actual children that age would react in the ways that they did.
All in all, not much happened in the grand scheme of things except that they - in Lost like style - have circled back around and answered
- Why did Walter's wife in the prime universe kill herself
- Why did Peter forget that he was from the alt. universe
- Why do Peter/Olivia seem to have this natural bond even though the romantic chemistry as adults isn't there
- How did the Alt. Walter figure out where his son went.
It the sense that it filled in a lot of gaps, it was a worthy episode. In the sense that it didn't progress the main story it fell a little short for me. I will say I was rooting for Walter when he stood up to Olivia's step dad......that was very cool.
All in all, an 8.2/10........not awesome, but very competently executed and some nice human touches to the story we don't always see with Fringe.