Summary: Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Season 12 - Episode 24: Unraveling the Mystery: A Big Bang Farewell
Air Date: May 16th, 2019
Summary: Johnny Galecki and Kaley Cuoco will lead fans on a trip down memory lane, sharing some of the best-kept backstage secrets and personal memories from the past 12 years.
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