Episode 4— The Tam Turbulence
Aired October 11, 2018 · 19 min

Synopsis
Leonard becomes curious about why Sheldon has never mentioned his childhood best friend and decides to look into it on his own. At the same time, Bernadette and Penny take Raj's fiancée to dinner in an attempt to learn more about her.
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Cast & Crew
Appearing in this episode.
Top billed cast
Johnny Galecki
as Leonard Hofstadter
Jim Parsons
as Sheldon Cooper
Kaley Cuoco
as Penny Hofstadter
Simon Helberg
as Howard Wolowitz
Kunal Nayyar
as Raj Koothrappali
Mayim Bialik
as Amy Farrah Fowler
Melissa Rauch
as Bernadette Rostenkowski
Jerry O Connell
as George Cooper, Jr.
Rati Gupta
as Anu
Robert Wu
as Tam Nguyen
Directors
1Writers
4Producers
2Other crew
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