The Walking Dead’ Actress Kelley Mack Dies at 33 — Fans Mourn Sudden Loss

Rising TV star Kelley Mack, who appeared in The Walking Dead and Chicago Med, has died just months after her final film role.

Kelley Mack, known for her role as Addy in The Walking Dead, has passed away at 33 after a courageous battle with cancer.

The actress died peacefully on August 2 in Cincinnati, Ohio, surrounded by her mother and aunt, after battling central nervous system glioma, a rare and aggressive cancer.

Best remembered for her performance in Season 9 of The Walking Dead, Mack also appeared in Chicago Med, the psychological thriller Broadcast Signal Intrusion, and most recently starred alongside Joe Thomas in the 2024 comedy-drama Universal.

Her family described her as a “bright, fervent light” in a heartfelt statement, noting her passing was peaceful and that “Kelley has already come to many of her loved ones in the form of various butterflies.” 🦋

A touching Instagram post on her official page confirmed the heartbreaking news, prompting an outpouring of grief and love from fans, friends, and former castmates.

“This girl was SO special. My heart is so broken,” one friend wrote.

Mack had shared her cancer journey publicly, revealing she had been undergoing aggressive treatment since her diagnosis in September 2024.

She leaves behind a legacy of warmth, talent, and resilience that touched fans across genres.