Updated January 22, 2010:

Sarah Brown (Sandy, B&B) will appear in the January 25 episode of "Castle" on ABC at 10:00 PM EST.

Check out this video for a look at the episode.

Will you watch Sarah on "Castle?" Tell Soaps.com what you think below.

Originally posted December 14, 2009:

Sarah Brown recently came to The Bold and the Beautiful as the emotionally tortured surrogate Sandy, but that's not the only place you'll be able to find her.

The actress recently tweeted about an upcoming appearance on the ABC series "Castle."

"Hey Guys, I'm working on "Castle" today! Doing a photo shoot to start off. I'm beyond thrilled... It's a great show. Have you seen it yet?"

"Castle" is about a mystery writer who was called in to consult on an NYPD investigation, but found a way to insinuate himself into the department fulltime. Nathan Fillion, who plays the title character, also started on One Life to Live as Joey Buchanan from 1994 – 1997 and then made a brief appearance in 2007.

"Castle" also stars Nathan Fillion, (ex-Joey, One Life to Live) and Seamus Dever, who played Dr. Ian Devlin on General Hospital in 2008.

No word yet on Sarah's airdate or the details of her character, but Soaps.com will keep you posted. If you're a fan of the show, find out more about the online 'extra' available in New Castle Novel!