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The Big Bang Theory S9E23 — The Line Substitution Solution
7.4
The Big Bang Theory•Season 9•Episode 23

The Line Substitution Solution

7.4/10 · 3,281 votesMay 5, 201618 min

Ranked #21 of 24 in Season 9•−0.2 vs season avg

Discussion

Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.

Directed byAnthony Rich
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Cast7

Johnny Galecki

Johnny Galecki

Leonard Hofstadter

Jim Parsons

Jim Parsons

Sheldon Cooper

Kaley Cuoco

Kaley Cuoco

Penny

Simon Helberg

Simon Helberg

Howard Wolowitz

Kunal Nayyar

Kunal Nayyar

Rajesh Koothrappali

Melissa Rauch

Melissa Rauch

Bernadette Rostenkowski

Mayim Bialik

Mayim Bialik

Amy Farrah Fowler

Crew12

Anthony Rich

Anthony Rich

Director

Steven Molaro

Steven Molaro

Teleplay

Maria Ferrari

Maria Ferrari

Executive Producer

Jim Reynolds

Jim Reynolds

Executive Producer

Eric Kaplan

Eric Kaplan

Executive Producer

David Goetsch

David Goetsch

Executive Producer

Tara Hernandez

Tara Hernandez

Story

Steve Holland

Steve Holland

Story

Saladin K. Patterson

Saladin K. Patterson

Story

Maria Ferrari

Maria Ferrari

Teleplay

Eric Kaplan

Eric Kaplan

Teleplay

Steve Holland

Steve Holland

Executive Producer

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Episode Summary

"The Line Substitution Solution" is episode 23 of The Big Bang Theory season 9. It scored 7.4/10 from 3,281 votes, ranking #21 of 24 episodes this season (season average 7.6). Directed by Anthony Rich, it aired on May 5, 2016.

Next: E24 · The Convergence ConvergenceBest of Season 9