"Powers, Principalities, Thrones and Dominions'" is the nineteenth episode of the first season of the American crime-thriller television series Millennium. It premiered on the Fox network on April 25, 1997. The episode was written by Ted Mann and Harold Rosenthal and directed by Thomas J. Wright. "Powers, Principalities, Thrones and Dominions" featured guest appearances by Sarah-Jane Redmond and Richard Cox. Millennium Group consultant Frank Black (Lance Henriksen) is convinced to return to work after the death of a close friend. However, it soon becomes apparent that his first case back on the job is much deeper than he had expected. "Powers, Principalities, Thrones and Dominions" features the final appearances in the series by both Bill Smitrovich and Robin Gammell. The episode has received mixed to positive reviews from critics, and was viewed by approximately 6.5 million households in its initial broadcast.