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Law & Order: Special Victims Unit · Defense attorneys

Trevor Langan 29 Law & Order: Special Victims Unit episodes

Defense attorney Trevor Langan, played by Peter Hermann, appears in 29 of the 594 episodes, from “Monogamy” (2002) to “Impropriety” (2026).

Played by
Peter Hermann
Role
Defense attorney, Seasons 3–12, 15–16, 19, 21, 23, 27
Episodes
29 of 594
First episode
Monogamy (S3E11, 2002)
Last episode
Impropriety (S27E19, 2026)
Worked most often with · episodes together

Season 3 2001–2002 · 1 episode

  1. 11. Monogamy

Season 4 2002–2003 · 5 episodes

  1. 2. Deception
  2. 6. Angels
  3. 8. Waste
  4. 24. Perfect
  5. 25. Soulless

Season 5 2003–2004 · 4 episodes

  1. 5. Serendipity
  2. 14. Ritual
  3. 19. Sick
  4. 22. Painless

Season 6 2004–2005 · 3 episodes

  1. 5. Outcry
  2. 11. Contagious
  3. 15. Hooked

Season 7 2005–2006 · 1 episode

  1. 21. Web

Season 8 2006–2007 · 1 episode

  1. 18. Responsible

Season 9 2007–2008 · 1 episode

  1. 18. Trade

Season 10 2008–2009 · 2 episodes

  1. 8. Persona
  2. 19. Selfish

Season 11 2009–2010 · 2 episodes

  1. 9. Perverted
  2. 22. Ace

Season 12 2010–2011 · 1 episode

  1. 3. Behave

Season 15 2013–2014 · 1 episode

  1. 24. Spring Awakening

Season 16 2014–2015 · 1 episode

  1. 9. Pattern Seventeen

Season 19 2017–2018 · 2 episodes

  1. 3. Contrapasso
  2. 5. Complicated

Season 21 2019–2020 · 1 episode

  1. 4. The Burden of Our Choices

Season 23 2021–2022 · 2 episodes

  1. 6. The Five Hundredth Episode
  2. 14. Video Killed the Radio Star

Season 27 2025–2026 · 1 episode

  1. 19. Impropriety

All 44 characters