Elena and Alaric both lash out at John when Isobel’s unexpected arrival leaves Jenna devastated. Bonnie works with Damon and Jeremy to find the spell they’ll need to harness her ancestors’ power. A heartbroken Caroline doesn’t know what to do about Matt. Stefan and Damon realize they have a new secret weapon.
| Title | Know Thy Enemy |
|---|---|
| Genres | Drama Sci-Fi & Fantasy |
| Release Date | 2011-04-07 |
| Episode Runtime | 00 Hours 43 Minutes |
| Season Number | 2 |
| Episode Number | 17 |
| Production Companies | Warner Bros. Television, Alloy Entertainment, Outerbanks Entertainment, Bonanza Productions, CBS Studios |
