Bernadette and Howard attempt to leave the kids at home on The Big Bang Theory finale. "The Stockholm Syndrome" is the 24th episode of the show's 12th season.
Leonard learns the truth about why his mother came to visit on The Big Bang Theory. "The Maternal Conclusion" is the 22nd episode of the show's 12th season.
Amy and Sheldon aren't sure if they should turn in Dr. Pemberton on The Big Bang Theory. "The Plagiarism Schism" is the 21st episode of the show's 12th season.
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.
