Mary McDonnell in Talks to Join Grey’s Anatomy

Mary McDonnell, who most recently played President Laura Roslin on Battlestar Galactica, is in talks to join the cast of Grey’s Anatomy for a multi-episode arc.
No details have yet been revealed about the character Mary McDonnell will play on Grey’s Anatomy, but certainly there’s plenty of speculation. Some Grey’s fans are guessing/hoping Mary McDonnell will play McDreamy’s mom, but she could certainly come on as a patient, doctor or other character’s relative.
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