Kelley Mack, who was best known for her role as Addy on the hit TV series “The Walking Dead,” died in Cincinnati last weekend, her family announced Tuesday. She was 33.

Kelley Mack’s death shocked her loved ones. Mack’s rep told TMZ Thursday that the “Walking Dead” star’s passing at age 33 was a “total” surprise. Mack, according to her rep, was auditioning for roles earlier this summer after she underwent cancer treatment in February and experienced a “nice recovery.”

"The Walking Dead" and "Chicago Med" actress died on Saturday at the age of 33, her sister said in a heartbreaking statement.