Some new Fringe spoilers have been released, regarding a mole in a Fringe division and the appearance of Walternate!

TV Guide has revealed that:

There’s a mole in the over-there Fringe Division, and he’s in cahoots with a pretty nasty guy who we’ve met before. No, it’s not Walternate, but he makes a brilliant return in Friday’s midseason premiere. You’ll barely recognize him though.

We know the mole is male – hopefully it’s not Lincoln! Alt Lincoln is, after all, the version of Lincoln we know the best, and he seems like a good guy. Could it be Alt Charlie?!

As for the appearance of Walternate, why won’t we recognize him? Has something happened?