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Law & Order: Special Victims Unit S21E19, Solving for the UnknownsS21E19

Law & Order: Special Victims Unit · Season 21

Law & Order: Special Victims Unit season 21 episode 19: Solving for the Unknowns

Aired 16 April 202043 minRated TV-14

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Where to watch Law & Order: Special Victims Unit Season 21 in Australia

Law & Order: Special Victims Unit season 21 is streaming in Australia on Prime Video (subscription) and Disney+ (subscription, listed for the whole show). You can also buy it on Apple TV from $32.99 and Prime Video Store from $19.99.

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Availability checked 16 November 2026.

What happens in “Solving for the Unknowns”

The SVU struggles to find a serial predator who uses a date rape drug that leaves no evidence behind. Rollins receives some good news.

Episode summary: TMDB.

Before you watch

  • It is episode 19 of 20 of season 21, so watch episodes 1 to 18 first.
  • It runs about 43 minutes.
  • Directed by Christopher Misiano, written by Brianna Yellen and Kathy Dobie.

Law & Order: Special Victims Unit trailer

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

Law & Order: Special Victims Unit trailerPlay video: Law & Order: Special Victims Unit trailer

Cast and crew of this episode

Director
Christopher Misiano
Writers
Brianna YellenKathy Dobie
Guest stars
Jamie Gray Hyder as Katriona TaminMadison Ferris as Piper HillEddie Kaye Thomas as Luke MitchellDaniel London as Ash GordonSusannah Flood as RebeccaNatalie Smith as Jill BaileyClaire Saunders as ChristieJackson Mercado as Counselor Efrain Hernandez

Credits: TMDB.

More from Law & Order: Special Victims Unit Season 21

S21E18Previous · S21E18Garland's Baptism by Fire2 April 2020
S21E20Next · S21E20The Things We Have to Lose23 April 2020
  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

Every episode of Season 21Law & Order: Special Victims Unit 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.