The final scene in this episode was bittersweet. It's great to see Peter back on screen (after appearing in the very same lake he drowned in during this timeline), but it's also incredibly sad that Olivia doesn't know who he is. Peter appears to remember everything that happened in the original timeline (including everyone's name and confidential details) while everyone else is scratching their heads as to why and how this person knows them. I'm also excited to see how this all unfolds with Lincoln, Olivia, and Peter. Do I smell a love triangle?