Season 6: Episode 3: The Higgs Boson Observation

Sheldon hires an assistant named Alex, an attractive female grad student. Amy gets incredibly jealous of Sheldon having a female assistant, but it turns out that Alex is actually more interested in Leonard. Penny doesn't quite know what to do, since this does make her a tad jealous, so she "marks her territory" by sleeping with Leonard.

Upcoming Airings

(subject to change)
9:30 pm, friday, october 13th

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