Hollywood is grieving the loss of actress Kelley Mack, best known for her standout role as Addy in The Walking Dead, who passed away on Saturday at just 33 years old. The actress died in her hometown of Cincinnati, Ohio, following a valiant fight against a rare form of brain cancer known as glioma of the central nervous system.
Born Kelley Klebenow, Mack carved out a meaningful career in film and television, winning hearts with her emotional depth, authenticity, and undeniable screen presence. From an early age, she showed a passion for acting that later led her to roles in acclaimed shows like Chicago Med, where she portrayed Penelope Jacobs, and countless commercials and voice-over projects for major global brands.
Fans of The Walking Dead remember her as Addy, a character who resonated with audiences for her resilience and vulnerability—qualities Mack carried both on and off-screen. Her performance left a lasting impression in a series beloved by millions around the world.
Those who knew her personally describe Kelley not just as a talented performer, but as a radiant soul—humble, kind, and deeply committed to her craft. Fellow actress and former co-star Alanna Masterson paid tribute, calling Mack “an incredible human” and expressing gratitude for having shared the screen with her.
A memorial service celebrating Mack’s life will be held at the Glendale Lyceum in Ohio on August 16, 2025. A separate celebration of life is being planned in Los Angeles, where Mack spent much of her acting career, surrounded by the community she helped inspire.
Kelley Mack may be gone far too soon, but her impact endures through the stories she helped tell, the characters she brought to life, and the lives she touched—both on camera and beyond.