Amy and Howard work in the lab together causing Sheldon, Bernadette and Raj to feel jealous and lonely. Penny starts using a parenting book to control Sheldon's behavior.
The Big Bang Theory
The Collaboration Contamination
season 11 episode 5
episode aired on october 2017
Episode rating
Cast of episode
56
18
14
7
3
1
1
- Penny
- Sheldon Cooper
- Bernadette Rostenkowski
- Howard Wolowitz
- Amy Farrah Fowler
- Leonard Hofstadter
- Raj Koothrappali
- Employee