The Big Bang Theory will crossover with its spinoff, Young Sheldon this season. According to CBS, Young Sheldon cast members Iain Armitage, Lance Barber (George) and Montana Jordan (Georgie) will appear in an upcoming December episode of its mothership series.
Description of the said crossover episode titled "The VCR Illumination" can be found below.
In Season 12 Episode 10: "Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon's past inspires him not to give up."
Also, "Bernadette turns into a pageant mom when she tries to help Wolowitz ace his Magic Castle audition."
This episode airs on December 6th.
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