Kelley Mack Fitch the Cat Photography Share on Facebook Share on X Share to Flipboard Send an Email Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Print the Article Post a Comment Kelley Mack, who played the Hilltop Colony resident Addy on the ninth season of AMC's The Walking Dead in 2018-19, died Saturday in her birthplace of Cincinnati after a battle with glioma of the central nervous system. She was 33.