Mary McDonnell to Guest Star on Grey's Anatomy
What will Mary McDonnell's guest role be on Grey's Anatomy?
Mary McDonnell is in the advanced stages of discussing a multi-episode guest act contract with ABC Networks for the show, Grey's Anatomy.
The nature of Mary's role has not yet been released, except for the fact that it is a guest gig.
Grey's Anatomy is on ABC; check with your local cable company for listings.