Reciprocity (Fringe)
episode of Fringe (S3 E11)
"Reciprocity" is the eleventh episode of the third season of the American science fiction drama television series Fringe, and the 54th episode overall. In the episode, the Fringe division follows a chain of shapeshifter murders as the assembly of the doomsday device nears completion. Ryan McDonald and Charles Parnell guest starred.
Co-executive producer Josh Singer wrote "Reciprocity", his seventh such credit for the series. For his third Fringe directional credit, Jeannot Szwarc served as the director. The episode first aired in the United States on January 28, 2011 to an estimated 4.57 million viewers, making it the highest rated program of the night. Television critics generally viewed the episode positively, with a number praising the revelation of the shapeshifter killer's identity.
Plot
The Fringe division visits a secured Massive Dynamic facility where the prime universe's version of the doomsday device, believed to be an artifact of the "First People", has been assembled. The company is trying to use the books about the First People, including those that William Bell had sought, that they have collected to understand the workings of the device. They are aware that before her departure, Fauxlivia (Anna Torv)—Olivia's parallel universe doppelgänger—stole one component of the unit, possibly its power source as they cannot find any other way to engage the device.
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