FRINGE: Love Hurts Promo

New promo for the March 23rd episode. I found the first half of this season very frustrating, these simply were not the characters I had connected with over the course of the first three seasons. But as time has gone on, Peter’s presence seems to have changed the characters, especially Walter, and brought them closer to the characters we have come to know. Are they the same characters, but simply reverting back as they have been exposed to Peter? Or are they truly another alternate universe?