Actor Kelley Mack, best known for playing Addy on "The Walking Dead," died over the weekend, her family announced. She was 33. "Such a bright, fervent light has transitioned to the beyond, where we all eventually must go," her sister Kathryn wrote on her Instagram page Tuesday.

Kelley Mack, whose TV credits included a recurring stint as Addy on The Walking Dead, has died at age 33 after a battle with cancer. Mack passed away Saturday in her native Cincinnati after suffering from glioma of the central nervous system (a type of tumor that starts in the brain or spinal cord), her …

Walking Dead' actress Kelley Mack's death at 33 came as a surprise after her recovery from treatment for a rare glioma cancer