'Walking Dead' Writer Scott M. Gimple Reacts to Kelley Mack's Death

The Walking Dead writer Scott M. Gimple is paying tribute to Kelley Mack after the actress’ death at 33 years old. “Sad news about a massively talented member of the TWD family,” Gimple, 54, wrote via X on Wednesday, August 6. “We’re grateful we got to work with Kelley Mack and share her magic with the world.” Mack was best known for her role as Addy in season 9 of the post-apocalyptic horror drama. Mack’s sister, Kathryn, confirmed her death via a post on the 9-1-1 alum’s Instagram page on Tuesday, August 5. Who Is '9-1-1' Actress Kelley Mack? What to Know After Her Death at Age 33 “It is wit