What Lies Below (Fringe)

"**What Lies Below**"
"What Lies Below"
Fringe episode
	Walter and Broyles block an infected man from escaping the building
Episode no.	Season 2; Episode 13
Directed by	Deran Sarafian
Written by	Jeff Vlaming
Production code	3X5112
Original air date	January 21, 2010
Guest appearances
	Geoff Pierson as Arnold McFadden; Demore Barnes as Agent Bill Hubert; Conrad Coates as Vincent Ames; Natassia Malthe as Linda; David Richmond-Peck as CSI Detective Kassel; Brendan Beiser as Steve; Nicolas Von Zill as Radjan Vandenkemp;
Episode chronology
← Previous; "Johari Window"	Next →; "The Bishop Revival"
	Fringe season 2
	List of episodes

"What Lies Below" is the 12th episode of the second season of the American science fiction drama television series Fringe. Set in a quarantined Boston office building, the episode revolves around a thousands-year-old viral hemorrhagic fever that infects and then influences its victims to attempt to spread the viral particles outside of the building.

It was the third Fringe episode to be written by supervising producer Jeff Vlaming, while it was director Deran Sarafian's only credit for the series to date. After his character becomes infected, actor Joshua Jackson commented during shooting to "just imagine the worst hangover I've ever had and multiply it by ten".^[1]

"What Lies Below" first aired in the United States on January 21, 2010, on the Fox network. An estimated 6.90 million viewers watched the episode, and it received mixed reviews from critics, with one calling it average and predictable.^[2]

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