Scott Wolf by Kevin Parry/ Scott Wolf by Kevin Parry/

So that's where Bailey is. A CBS rep confirms that Party of Five alum Scott Wolf, as well as Julia Ormond ( Sabrina), will take part in CSI: NY's landmark 100th episode, airing Nov. 19.

Just as with recently announced fellow guest star Rumer Willis, Wolf will play someone named "Mac Taylor," making him a target of a serial killer who is picking off such namesakes of Gary Sinise's character. (Wolf's casting was first reporetd by EW's Ausiello.)

Ormond, meanwhile, will play an investigator.

CSI: NY returns this Wednesday, Sept. 24. - Matt Mitovich

" CSI: NY Serial Killer Looks to Squelch Rumer