Can you say "Peter's going to find out where he's really from?"
It's a bit of a mouthful, I know, but it's also the truth. They've been building up to this big reveal since the season one finale, when we first found out that the Peter from this universe had died, and that Walter had brought the Peter we all know over from the alternate universe. Now, we'll possibly see a little more of the Bishop family history with the casting of Walter's wife and Peter's mother, an as-yet unnamed Mrs. Bishop.
She will be portrayed by Irish actress Orla Brady, according to Entertainment Weekly.
If you're asking 'Orla who?', well, there's no real definining work for the actress. In addition to appearing in all six episodes of the TV miniseries Revelation (which aired on NBC in 2005), Brady is also memorable (for those who watch the show) as James Woods’ ex on Shark.
Though Brady may not be a household name, her character will reportedly be pivotal to the series. We still haven't found out exactly where she is while Walter and Peter are off investigating, but it's likely that we will find out when Brady makes her Fringe debut when the series resumes in January.