Poster of Episodes in The Big Bang Theory - Season 4 - Season 4

The Big Bang Theory - Season 4

Plot: This season the Big Bang gang’s romantic universe expands. On the rebound from Penny, Leonard falls into the arms of Raj’s sister Priya
First Episode Aired On:
Thursday, September 23 2010
14 years ago
Last Episode Aired On:
Thursday, May 19 2011
13 years ago
Number of Episodes: 24