The list of Castle guest stars just got a little longer.

Over the last couple weeks, we've reported that Dana Delany, Tom Bergeron and Kelly Carlson would all appear on the ABC hit this spring. We can now add the name Navi Rawat to that list.

As first reported by TV Guide, the actress will portray Rachel Walters, a mummification expert who crosses paths with the show's main character's when the Natural History Museum's assistant curator is found murdered.

Walters ends up as a suspect in the murder, while the episode also featured a near-death experience for Castle. The episode airs on April 5.

Rawat has starred for years on Numb3rs and popped up on an episode of FlashForward earlier this season.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.