Chicago – August 06, 2025
Actress Kelley Mack, known for her appearance in post-apocalyptic zombie drama “The Walking Dead,” has died. She was 33.
Mack, who was born Kelley Klebenow, “passed away peacefully” in her hometown of Cincinatti on Saturday after battling glioma of the central nervous system, according to a statement posted on the social networking site CaringBridge. A glioma is a type of tumor that affects the brain or spinal cord.
“It is with indelible sadness that we are announcing the passing of our dear Kelley. Such a bright, fervent light has transitioned to the beyond, where we all eventually must go,” read a post on Mack’s Instagram on Tuesday alongside a photo of the actress.
Condolences have poured in from colleagues, friends and fans remembering her as “talented” and a “sweet soul.”
“What an incredible human. So proud to have fought alongside her in our final episode together,” wrote Alanna Masterson, who also starred in “The Walking Dead.”
Mack held 35 actress and five producer credits during her career, according to the statement posted to CaringBridge. She was best known for playing Addy in season 9 of “The Walking Dead,” and Penelope Jacobs in season 8 of “Chicago Med” and on FOX’s “9-1-1.”
