'Grey's Anatomy' season 18 has a new cast addition. Actor Scott Speedman has joined the cast of 'Grey’s Anatomy' new season as a series regular. Speedman is one of the most memorable guest stars in Grey’s Anatomy history.

This fan favourite guest star returned to Grey's Anatomy season 18 as a series regular

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Grey's Anatomy Season 18, News on Grey's Anatomy Season 18, stories on Grey's Anatomy Season 18, articles on Grey's Anatomy Season 18, Grey's Anatomy Season 18 stories at Wion, Grey's Anatomy Season 18 news, Grey's Anatomy Season 18 latest news

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This fan favourite guest star returned to Grey's Anatomy season 18 as a series regular