It was another trip back to the '80s on Friday night's mythology-heavy episode of "Fringe" (and those are really the best kind).

All sorts of questions were left up in the air after last season's 1985 flashback, and this one answered quite a few of them.

Of course, Peter didn't automatically accept his new parents, which planted the seeds for the strained relationship he had with Walter, and to some extent, still has.

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