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Special Guest Stars

Many well-known stars of television and film have guest starred in episodes of Castle. They include:

Season 1

Season 2

Season 3



  • Juliana Dever plays Jenny, girlfriend to Detective Kevin Ryan, who is portrayed by her real-life husband, Seamus Dever.
  • Reed Diamond appeared in a TV movie called Faceless, with Stana Katic, who plays Kate Beckett.
  • Nathan Fillion invited friend Dana Delany, with whom he appeared in Desperate Housewives, to appear as Special Agent Jordan Shaw in the season 2 two-parter.
  • William R. Moses appeared in Falcon Crest, as the son of Susan Sullivan's character.