Name: Episode 17 — Know Thy Enemy
Released: 2011-04-07
Duration: 43 min
Rating: 8.4
Cast: Paul Wesley, Ian Somerhalder, Kat Graham, Candice King, Zach Roerig

The Vampire Diaries (2009 – 2017)

2009 • 8 seasons • Drama, Sci-Fi & Fantasy • TV-14

On August 9, 2026

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313th by attention TV show online

50.3 Attention Score

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Episode 17 — Know Thy Enemy

Released: 2011-04-07 • Drama/Sci-Fi & Fantasy

84%

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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.

Information

Creator	Kevin Williamson, Julie Plec
Episode air date	07.04.2011
Episode runtime	43 min
Episode rating	8.40
Genres	Drama / Sci-Fi & Fantasy
TMDB series rating	8.3
IMDb series rating	7.7
Series status	Ended
Age rating	14+
Country	US

The Vampire Diaries (2009 – 2017)

Episode 17 — Know Thy Enemy

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