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Watch The Big Bang Theory Season 12 Episode 18 Online

  • 7.9/10
  • COUNTRIES: United States of America
  • Subtitles: English

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side. Also, Halley's fear of the dark causes opportunity and conflict at the Wolowitz home.