STAGE TUBE: Sneak Peek - Eerie 19th Episode of Fox's FRINGE Airing 4/20

Fox has released a trailer for its annual eerie '19th episode' of the drama series FRINGE. 'Lost‘s' Henry Ian Cusick and Georgina Haig will guest-star in the episode as FBI agents. According to TVLine, Blair Brown has hinted at the introduction of "another Nina," while John Noble reveals he got to play two new Walters in the installment. The episode airs this Friday, April 20th from 9:00-10:00 PM ET/PT on the FOX network.

Set in Boston, the FBI's Fringe Division started when Special Agent OLIVIA DUNHAM (Anna Torv) enlisted institutionalized "fringe" scientist Walter Bishop (John Noble) and his globe-trotting, jack-of-all-trades son, PETER (Joshua Jackson), to help in an investigation of an airline disaster that defied human logic. After the defining case was solved and furthermore revealed to be one of a series of unusual incidents linked together, the unlikely trio - supervised by Special Agent PHILLIP BROYLES (Lance Reddick) and assisted by ASTRID FARNSWORTH (Jasika Nicole) - was formed. Rounding out the roster is LINCOLN LEE (Seth Gabel), an agent from "over there" who serves as an integral part of the narrative.

As unimaginable events continued to unfold, the Fringe Division's investigations often lead them to the important science and technological corporation Massive Dynamic and its enigmatic chief executive, NINA SHARP (Blair Brown). Olivia discovered that she was a test subject of Dr. Bishop and Massive Dynamic's elusive founder and chairman WILLIAM BELL (guest star Leonard Nimoy) as a child. When she uncovered this, she learned of a parallel universe and discovered her ability to detect anything from this alternate world. Shockingly, it was eventually revealed that Walter kidnapped Peter as a child from "over there" after his Peter died, thus creating an imbalance between the two universes.

View the trailer for the upcoming episode below!