And this episode, which seemed to make little sense according to the overall story that is being told, tells a "minor" Fringe story to interject another side-plot, this one closer to "home".
This has to do with the "Orange Fringe 'Verse" version of one of our main Fringe characters.
We are discovering now, that people we considered allies in the first three seasons of Fringe - Now have motives different than what we thought they had in the "Blue Fringe 'Verse".
Or did they have ulterior motives all along?
The "Fringe Event" of this ep, Although interesting, is not of the caliber of what we usually see in these weekly "Proceedural" eps. But regardless, I feel this is an important Ep: If only for the fact, that there seems to be something a bit more sinister happening, "closer to home", which brings questions about where the "new shapeshifter threat" is really coming from.