Opal Burdock is a character in The Night World series, first appearing in Daughters of Darkness. Opal is a Lamia vampire living outside of the Nightworld Society after the execution of her husband. Occasionally she makes contact with humans, especially Mary-Lynette Carter, whom she spent time with while helping around the house. Unlike Made vampires, Lamia vampires can age if they choose to and after Opal arrived in the human settlement Briar Creek she began to age rapidly as she no longer held off the aging process. Consequently she went from having an appearance of approximately 40 to looking like a frail old woman, resulting in her having to rely on her goats for blood. She at least had a friendship with both Mary-Lynnette Carter and Jeremy Lovett who helped her around the house. Opal i