Earlier we posted that the fabulous Mandy Moore will be guest starring during the two-hour season finale for Grey's Anatomy... but we've got more news on who else will be guest starring during this episode!
Ryan Devlin, Veronica Mars' alum, will be guest starring as Mary's husband. Mary will be played by Mandy Moore, as previously reported.
Not much else is known about this season finale... but stay tuned! We'll post spoilers about the season finale as soon as we know any!
Source: Ausiello Files