The Big Bang Theory

The Propagation Proposition

E12    Jan 10, 2019    20m    TV-PG
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Penny’s ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard for help. Also, Koothrappali attempts to mend things with his ex-fiancée, Anu.
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Cast of The Propagation Proposition
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRajesh Koothrappali
  • Melissa RauchBernadette Rostenkowski
  • Mayim BialikAmy Farrah Fowler
  • Brian GeorgeV.M. Koothrappali
  • Brian Thomas SmithZack Johnson
  • Rati GuptaAnu
  • Shay AliGreg
  • Chip ChineryBob
  • Lindsey KraftMarissa Johnson

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