How did the Olivia swap happen?

[myu]

Was it the concussion of the grenade, knocking her out but leaving the alternate Olivia wide awake? If so, I guess she must have dragged the other Olivia off to the side hidden by debris, then awakened William Bell with the pretense of being the "original" Olivia. Is that how it went?

[Fysh19]

Thats what I was thinking myu. But I knew when she woke Bell up, that she was not OUR Olivia.:mad: Shes still HOT though.:p

[Gettingafixonlost]

I was thinking the same thing too and I was totally surprised!!!!!
Was that the season finale? (I never watch commercials, but I'm guessing it was?)

[CitizenX]

I was hoping i wasn't just imagining that swap thing.

[tcragg]

IDK MYU but I did know immediately that it was alt Olivia. Great finale episodes, and got me back to watching Fringe again (thanks to Hulu), however, that was very predictable...

[shotgun willy]

great episode, wish they had beefed it up to 2 hrs for the finale though.

Fringe is so good, id say on par or above lost, IMHO