The Decision Reverberation
| Episode Number | 20 |
|---|---|
| Season | 12 |
| Aired | 2019-04-25 |
| Overview | Koothrappali is worried people won't take him seriously in his own field after publishing a paper that suggests he may have discovered alien life. Also, Leonard wants to be the principal investigator on a plasma physics study. |
| Runtime | 25 minutes |
| Absolute Number | 275 |
| Finale Type |