Fringe (2008–2013)
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Enemy of My Enemy 

Peter's visit to the other side intensifies as the alternate Fringe division faces off against a formidable new foe in a harrowing race against time.



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Episode cast overview, first billed only:
Phillip Broyles / Alternate Phillip Broyles
Nadine Park
Chaz Chamberlain ...
ND Agent #1
Achara Kirk ...
ND Agent #2
Harrison MacDonald ...
Teenage Boy
Nurse (as Henry J. Mah)


Peter's visit to the other side intensifies as the alternate Fringe division faces off against a formidable new foe in a harrowing race against time. Written by Fox Publicity

Plot Summary | Plot Synopsis






Release Date:

20 January 2012 (USA)  »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

1.78 : 1 / (high definition)
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Did You Know?


In the alternate timeline, you can tell that in the alternate universe there is a small difference. The Fringe Division logo is different, but similar to the one in the future timeline that Peter visited in the season 3 finale. See more »


Lincoln Lee: I lost a partner.
Peter Bishop: I lost a universe!
See more »


First Song (For Ruth)
Written by Charlie Haden
Performed by Charlie Haden Quartet West
See more »

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User Reviews

Shifting format, decent nemesis, cosmic Peter, entertaining mind game, charming and moving guest, delicious sci-fi candy
28 February 2012 | by (France) – See all my reviews

Prime. Other side. Back ? Switch ! I almost begged for a full parallel storyline involving all characters but I have to admit that this time it was a little confusing. I mean how are we supposed to grasp that Lincoln and Olivia are on the other side working with his alternative self and Bolivia ? Still it makes things so much more exciting and puzzling that I won't complain ! And of course the climax was reached when they all eight gathered in the same room to plan their next move against the shapeshifters. I wasn't convinced by the speech their leader gave to Lincoln and Olivia because it sounded like overused lines but I have to admit that he has potential and his scarface make him quite a nemesis.

It leads us to Peter because now he knows where he stands, right between both universes. He absolutely turned the interrogation upside down. From two shapeshifters playing humans to the variable they didn't see coming. It actually reminded me of the fascinating episodes The Constant and The Variable from Lost. So I'm quite intrigued because I wonder if Fringe's writers will try to push the logical barrier even further. Moreover Peter isn't the only variable to consider, the shapeshifters were also introduced by mistake and in fact he's kind of responsible for it. Broyles also blur the lines because despite the fact that we know he's one of them he's just unpredictable. I suppose that's the reason why it was also revealed that Nina was a shapeshifter too. It's not about guessing who is who but about playing an interdimensional mind game.

Beside the main story the episode also had its usual lot of funny scientist Walter, empathic Astrid and last but not least Shapeshifter Cow™ ?! It's disgusting the way they treat animals on TV ! Poor thing, tortured by his brush and forced to hear his bizarre mumble. But she wasn't really the lady that caught my attention because I confess that Orla Brady charmed me as Elizabeth Bishop. She brought the emotional moments a great installment requires to move its audience. At first when she told Walternate that she could help Peter I was skeptical and almost mocked her good intentions but then it quickly made sense when she decided to cross over to face Walter.

An other pro to add to our list is the sci-fi candy. Want some ? Get some ! First the female shapeshifter death in the water tank was brilliantly executed. Second the chopping portal that almost cut our crazy action woman Olivia in half felt like playing a cross over between Prince of Persia (The 1989 version of course and not the vicious reboot !) and well Fringe ! One second she's legally dead, the next she miraculously braked thanks to Peter's warning. Do it. Don't do it. He has to kiss her goodbye once they have found a solution to send him back home ! Or maybe they won't and he'll change his name to Peter Mallory. In fact I have reached the Gates of Geek Heaven when he realized the map they were tracking them on was from an other universe. The surveillance software Broyles used to follow their every moves was cool too, even if it wasn't as advanced as the one featured in Person of Interest. In one formula : F = (V . Ω) ∞ (○ + ●) !

Note : This review was first posted on Kritikenstein, my weblog.

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