Hollywood actress Kelley Mack, best known for her performances in The Walking Dead and Chicago Med, has sadly passed away at the age of 33.

Born Kelley Klebenow, she died on Saturday in her hometown of Cincinnati following a brave battle with a rare form of brain cancer, known as central nervous system glioma.

Mack began her journey in the entertainment industry at a young age and steadily built a career that included roles in well-known television series and national commercials.

She gained recognition for her compelling portrayal of Addy in The Walking Dead and as Penelope Jacobs in Chicago Med, earning praise for her range and screen presence.Beyond television, she also worked extensively in voice-over and appeared in high-profile commercial campaigns for several major brands.

Tributes have poured in from friends, co-stars, and fans, remembering Mack not only for her talent but also for her warmth and commitment to her work.

Alanna Masterson, who shared the screen with her on The Walking Dead, described her as an “incredible human” and said she was honoured to have worked with her.

A memorial service will take place on August 16, 2025, at the Glendale Lyceum in Glendale, Ohio. A separate celebration of life will be held in Los Angeles to commemorate her impact on the entertainment world.