Fringe aired a revealing, shocking episode last Friday. What did you think of "Subject 13?"

Viewers will have an extra week to ponder various questions that resulted from this trip back in time, as the drama is on hiatus until March 11.

When it returns with "Os," we'll see the team look into a group of thieves who can break the laws of physics, while Walter tries to delay the damage he’s caused to the fabric of the universe. Check out the official preview for this episode now and watch for a William Bell reference:

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