Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
| Title | The Alien Parasite Hypothesis |
|---|---|
| Genres | Comedy |
| Release Date | 2010-12-09 |
| Episode Runtime | 00 Hours 22 Minutes |
| Season Number | 4 |
| Episode Number | 10 |
| Production Companies | Chuck Lorre Productions, Warner Bros. Television |
