S5E2
The Infestation Hypothesis
The Big Bang Theory
calendar_todaySep 22, 2011
schedule20 min
star7.7
A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
broadcast_on_home Networks
CBS
star Guest Stars
Alice Amter
Mrs. Koothrappali
Aarti Mann
Priya Koothrappali
Brian George
V.M. Koothrappali