The Walking Dead star Kelley Mack dies at 33: Family shares emotional tribute

Kelley Mack, known for her role as Addy in Season 9 of The Walking Dead, passed away on August 2 at the age of 33, her sister Kathryn Klebenow announced on Tuesday.

“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,” Klebenow wrote on Instagram alongside a picture of Mack.

“Kelley passed peacefully on Saturday evening with her loving mother Kristen and steadfast aunt Karen present,” the post continued.

“She would want you all to know how much she loves you. And as her sister, I want you all to know how brave she was, especially when she decided to make the leap to be reunited with God. I’m so proud of her,” Klebenow signed off.

Mack’s family shared in a statement that she died in her hometown of Cincinnati after battling glioma of the central nervous system, according to Variety.

She graduated from Hinsdale Central High School in 2010 and earned a bachelor’s degree in cinematography from the Dodge College of Film at Chapman University in 2014.

Mack made her acting debut in the film The Elephant Garden, which earned her an acting award from Tisch School of the Arts. The film also won the Student Visionary Award at the Tribeca Film Festival in 2008.

She was best known for her television roles, including Addy in The Walking Dead Season 9, Penelope Jacobs in Season 8 of Chicago Med, and appearances on FOX’s 9-1-1. Mack also appeared in films such as Broadcast Signal Intrusion and Delicate Arch.

In addition to acting, Mack worked as a screenwriter alongside her mother, Kristen Klebenow. Her screenwriting credits include On The Black, a college baseball story set in the 1950s loosely based on her maternal grandparents' time at Ohio University.

Mack is survived by her mother and father, Kristen and Lindsay Klebenow, sister Kathryn, brother Parker, and grandparents Lois and Larry Klebenow.