Known Unknowns

"**Known Unknowns**"
"Known Unknowns"
House episode
Episode no.	Season 6; Episode 7
Directed by	Greg Yaitanes
Written by	Matthew V. Lewis & Doris Egan
Original air date	November 9, 2009
Guest appearances
	Michael Weston as Lucas Douglas; Annabelle Attanasio as Jordan Retzinger; Marcus Giamatti as Jeffrey Keener; Bianca Collins as Phoebe; Eric Lutes as Derek Retzinger; Holly Gagnier as Michelle Berkley-Retzinger;
Episode chronology
← Previous; "Brave Heart"	Next →; "Teamwork"
	House season 6
	List of episodes

"Known Unknowns" is the seventh episode of the sixth season of House and 117th overall.^[1] It aired on Fox on November 9, 2009. The team tries to diagnose a teenage girl while House is away at a medical conference with Wilson and Cuddy. At the conference House finds something out about Cuddy.

^ Yaitanes, Greg (2009-11-09), Known Unknowns, retrieved 2016-11-02

[1] Yaitanes, Greg (2009-11-09), Known Unknowns, retrieved 2016-11-02

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