Merritt Weaver will make her Walking Dead debut as Denise Cloyd. She'll be the new doctor in town following the death of Pete, though not a lot of official information has been released about her. An advanced preview of the episode from Spoiler TV gives us an insight: "Shes fun, in her own special way. Shes the new doctor in Alexandria. It only took me one minute to really like her. She has a lot of potential."