Actress and producer Kelley Mack, known for her work in hit series like T he Walking Dead, Chicago Med, and more, has passed at 33 following a battle with a glioma, ABC r eports.

Actress Kelley Mack, known for her appearance in post-apocalyptic zombie drama “The Walking Dead,” has died. She was 33.

Kelley Mack — the actress who appeared as Addy on season nine of "The Walking Dead" — died following a battle with a rare form of cancer. She was 33.