Tension runs high when everyone is staying at the same hotel for a science event and Bernadette runs into her ex-boyfriend.
Tension runs high when everyone is staying at the same hotel for a science event and Bernadette runs into her ex-boyfriend.
Guest Cast
Cast Appearances
![Penny](https://static.tvmaze.com/uploads/images/medium_portrait/175/439563.jpg)
Kaley Cuoco
as PennyEpisode Discussion
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