Christina Ricci by Lester Cohen/WireImage.com
Wednesday Addams is joining a Monday drama.
has been tapped for a three-episode arc on TNT's
(which premieres its second season tonight), says the
's girlfriend will play a young detective who partners with Grace while Ham (
new TVGuide.com celebrity blogger Kenneth Johnson
) takes a leave of absence.
Among her other TV creds, Ricci, of course, was most literally da bomb in a 2006