Season 10 · Episode 22 · Overall #229
The Cognition Regeneration
Aired April 27, 2017 Directed by Mark Cendrowski Written by Story by : Steve Holland & Tara Hernandez & Jeremy Howe | Teleplay by : Dave Goetsch & Eric Kaplan & Jim Reynolds
About This Episode
Penny runs into an ex-boyfriend and it makes Leonard reconsider his own growth. How far they've all come becomes the real story.
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