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Reciprocity is the eleventh episode of the third season of Fringe.
Starring: Anna Torv (Special Agent Olivia Dunham), Joshua Jackson (Peter Bishop), Lance Reddick (Special Agent Phillip Broyles), Blair Brown (Nina Sharp), Jasika Nicole (Special Agent Astrid Farnsworth)
Co-Starring: Lars Anderson (Tech), Noah Beggs (Lieutenant Pike), Michael Charrois (John), Brett Delaney (Agent Goldin), Melissa Demmers (Aide), Paula Giroday (Agent Ruiz), Ian Hawkins (Civil Servant), Hector Johnson (PFC Tomforde), Nimet Kanji (Dr. Grant), Neelam Khabra (Tech #2), Byron Noble (Jack), Raymond Sammel (Transient), Melissa Stubbs (Woman)