The Recurring Cast
Character · Delaware circle · 37 books

Robin Castagna

Luthier; Alex’s on-and-off partner · Jonathan Kellerman

Robin Castagna is a luthier who makes guitars, and Alex’s on-and-off partner.

Spoiler-free profile written for The Recurring Cast.

As an Amazon Associate I earn from qualifying purchases.

Character facts

First appearance
When the Bough Breaks (1985)
Latest appearance
Jigsaw (2026)
Books
37 (11 major, 26 minor)
Series
Alex Delaware
Author
Jonathan Kellerman
Circle
Delaware circle

Where to meet Robin Castagna

Robin Castagna first appears in When the Bough Breaks (1985), in a major role, book 1 of the Alex Delaware series.

Buy When the Bough Breaks

Every book with Robin Castagna

In publication order, with the size of their role in each.

  1. 1985MWhen the Bough Breaksmajor role · Alex DelawareFirst appearanceBuy
  2. 1986·Blood Testminor role · Alex DelawareMostly on the phone, building instruments for a client in JapanBuy
  3. 1987MOver the Edgemajor role · Alex DelawareLiving with AlexBuy
  4. 1989·Silent Partnerminor role · Alex DelawareHas left to get more spaceBuy
  5. 1992·Private Eyesminor role · Alex DelawareBuy
  6. 1993MDevil’s Waltzmajor role · Alex DelawareBuy
  7. 1994MBad Lovemajor role · Alex DelawareBuy
  8. 1995MSelf-Defensemajor role · Alex DelawareBuy
  9. 1996MThe Webmajor role · Alex DelawareTravels with Alex to a Pacific islandBuy
  10. 1997MThe Clinicmajor role · Alex DelawareBuy
  11. 1997·Survival of the Fittestminor role · Alex DelawareBuy
  12. 1999·Monsterminor role · Alex DelawareBuy
  13. 2000·Dr. Deathminor role · Alex DelawareBuy
  14. 2001·Flesh and Bloodminor role · Alex DelawareBuy
  15. 2002MThe Murder Bookmajor role · Alex DelawareTakes a break from the relationship after a trip to ParisBuy
  16. 2003MA Cold Heartmajor role · Alex DelawareNow Alex’s ex; the case reaches her doorBuy
  17. 2007MObsessionmajor role · Alex DelawareLiving with Alex again; gives him BlancheBuy
  18. 2008·Compulsionminor role · Alex DelawareBuy
  19. 2008·Bonesminor role · Alex DelawareBuy
  20. 2009·Evidenceminor role · Alex DelawareBuy
  21. 2010·Deceptionminor role · Alex DelawareBuy
  22. 2011·Mysteryminor role · Alex DelawareBuy
  23. 2012·Victimsminor role · Alex DelawareBuy
  24. 2013·Guiltminor role · Alex DelawareBuy
  25. 2014·Killerminor role · Alex DelawareBuy
  26. 2015·Motiveminor role · Alex DelawareBuy
  27. 2016·Breakdownminor role · Alex DelawareBuy
  28. 2017·Heartbreak Hotelminor role · Alex DelawareBuy
  29. 2018·Night Movesminor role · Alex DelawareBuy
  30. 2019·The Wedding Guestminor role · Alex DelawareBuy
  31. 2020·The Museum of Desireminor role · Alex DelawareBuy
  32. 2021·Serpentineminor role · Alex DelawareBuy
  33. 2022·City of the Deadminor role · Alex DelawareBuy
  34. 2023·Unnatural Historyminor role · Alex DelawareBuy
  35. 2024·The Ghost Orchidminor role · Alex DelawareBuy
  36. 2025MOpen Seasonmajor role · Alex DelawareHelps Alex spot the common threadBuy
  37. 2026·Jigsawminor role · Alex DelawareBuy

Appears most often with

CharacterBooks together
Alex DelawareChild psychologist who consults for the LAPD37
Milo SturgisLAPD homicide detective, later lieutenant; Alex’s closest friend37
Rick SilvermanER doctor; Milo’s partner. Usually a passing presence, so marked across the series as an estimate37
BlancheFrench bulldog who follows Spike. Marked across the later books as an estimate21
Sean BinchyDetective on Milo’s team. A frequent minor presence, so marked across the later books as an estimate19
SpikeFrench bulldog11