Season 8, Episode 4 - The Hook-Up Reverberation
Aired October 6, 2014
Raj's openness about his romantic history, including his inadvertent hook-up with Penny, leads to tension when Emily finally meets Penny. After Emily is frosty to Penny, Raj tries to patch things up.
Meanwhile, the guys consider investing in Stuart's comic book store to help it reopen after the fire, although the women in their lives don't see the investment potential.