‘The Walking Dead’ Star Kelley Mack Was Auditioning for Roles Weeks Before Her Tragic Death
Cincinnati, OH – August 7, 2025 — Kelley Mack, the talented actress known for her role as Addy in Season 9 of The Walking Dead, passed away on August 2, 2025, at the age of 33, following a battle with glioma, a rare form of central nervous system cancer. In a heartbreaking revelation, sources close to Mack confirmed she was actively auditioning for acting roles as recently as early June, showcasing her resilience and passion for her craft despite her ongoing health challenges.
Mack, born Kelley Lynne Klebenow in Cincinnati, Ohio, was diagnosed with diffuse midline glioma (DMG), an aggressive brain tumor, in January 2025. After undergoing proton radiation treatment in February, she experienced a promising recovery, regaining mobility through physical therapy and even learning to walk again. Her determination shone through as she continued to pursue her career, auditioning for roles that accommodated her mobility issues, as she relied on a wheelchair due to the tumor’s impact on her legs.
A representative for Mack told TMZ that her death came as a “total surprise” to those around her, given her active engagement in voiceover work and auditions just weeks prior. She had recently completed her final film, Universal, a sci-fi drama where she served as both lead actress and executive producer. The film, described by Mack on Instagram as “a small, down-to-earth film about huge, out-of-this-world concepts,” premiered shortly before her passing and is set for posthumous release.
Despite her health struggles, Mack remained dedicated to her craft and her loved ones. A family source revealed she spent significant time with family and friends in her final days, cherishing moments of connection. Her sister, Kathryn, announced Mack’s passing on Instagram, writing, “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.”
Mack’s career began in childhood with roles in commercials for brands like Dr. Pepper and Chick-fil-A, eventually leading to notable performances in The Walking Dead, Chicago Med, and 9-1-1. She also made significant contributions as a producer and screenwriter, collaborating with her mother, Kristen Klebenow, on projects like On The Black, a 1950s baseball drama inspired by her grandparents.
The entertainment community mourned her loss, with The Walking Dead writer Scott Gimple calling her “massively talented” and co-star Alanna Masterson describing her as “an incredible human.” Mack’s infectious enthusiasm and storytelling passion left a lasting impact on those who knew her.
Mack is survived by her parents, Kristen and Lindsay Klebenow, her sister Kathryn, her brother Parker, her grandparents Lois and Larry Klebenow, and her boyfriend, Logan Lanier. A memorial service is scheduled for August 16 at the Glendale Lyceum in Glendale, Ohio, with a second celebration planned in Los Angeles.
Her legacy as a vibrant actress, producer, and storyteller endures through her work and the lives she touched. Fans and colleagues alike continue to honor her memory, with many noting her courage in pursuing her dreams until the very end.