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The Vampire Diaries S01E21, IsobelS01E21

The Vampire Diaries · Season 1

The Vampire Diaries season 1 episode 21: Isobel

Aired 6 May 201043 minRated TV-14

7.5TMDB · 21 votesMark watched

Where to watch The Vampire Diaries Season 1 in Australia

The Vampire Diaries season 1 is streaming in Australia on Prime Video (subscription), HBO Max (subscription) and Stan (subscription), and free on 9Now. You can also buy it on Apple TV from $29.99.

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Availability checked 16 November 2026.

What happens in “Isobel”

Isobel returns to town and stuns Alaric with her attitude and her demands that he arrange a meeting with Elena. When mother and daughter finally meet, Isobel refuses to answer most of Elena’s questions, but reveals that she will stop at nothing to find the mysterious invention Johnathan Gilbert has been searching for. Isobel’s dangerous actions lead Stefan, Damon and Bonnie to step in and help Elena deal with the situation.

Episode summary: TMDB.

Before you watch

  • It is episode 21 of 22 of season 1, so watch episodes 1 to 20 first.
  • It runs about 43 minutes.
  • Directed by J. Miller Tobin, written by Caroline Dries and Brian Young.
  • TMDB users rate it 7.5 out of 10 (21 votes).

The Vampire Diaries trailer

The official trailer for the series (no preview of this episode has been published).

The Vampire Diaries trailerPlay video: The Vampire Diaries trailer

Cast and crew of this episode

Director
J. Miller Tobin
Writers
Caroline DriesBrian Young
Guest stars
Matthew Davis as Alaric SaltzmanMia Kirshner as Isobel FlemmingMelise as Anna ZhuMichael Roark as FrankDavid Anders as John GilbertJena Sims as Cherie

Credits: TMDB.

More from The Vampire Diaries Season 1

Previous · S01E20Blood Brothers29 April 2010Next · S01E22Founder's Day13 May 2010
  1. E01
  2. E02
  3. E03
  4. E04
  5. E05
  6. E06
  7. E07
  8. E08
  9. E09
  10. E10
  11. E11
  12. E12
  13. E13
  14. E14
  15. E15
  16. E16
  17. E17
  18. E18
  19. E19
  20. E20
  21. E21
  22. E22

Every episode of Season 1The Vampire Diaries episode guide

Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.