Keeping a Secret - The Big Bang Theory
Leonard and Penny try to keep a secret on The Big Bang Theory. "The Stockholm Syndrome" is the 24th episode of the show's 12th season.

Unrated
Photo Credit:
Michael Yarish/CBS
Show:
The Big Bang Theory
Episode:
The Big Bang Theory Season 12 Episode 24: "The Stockholm Syndrome"
Characters:
Leonard Hofstadter, Penny
Related Photos:
TBBT Photos, The Big Bang Theory Season 12 Episode 24 Photos, Leonard Hofstadter Photos, Penny Photos
Location:
Los Angeles, California
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The Big Bang Theory Season 12 Episode 24 Quotes

I apologize if I haven't been the friend you deserve. But I want you to know, in my way, I love you all.

Sheldon

Sheldon: The only drug I need is the endorphins pumping through my brain in anticipation of our victory.
Amy: Well, technically, anticipation wouldn't be mediated by endorphins as much as dopamine but, y'know, you've been up all night so I'll give you that one.