
"There's always a Twist at the end," proclaimed the song and dance routine at the end of "The Devil's Chord." The penultimate episode of this "Doctor Who" season has delivered on that promise.
Susan Twist, an actor who's had numerous cameos in the latest run of episodes, finally took center stage as tech entrepreneur Susan Triad, in a plotline that has big ramifications for the Doctor (Ncuti Gatwa), Ruby Sunday (Millie Gibson), planet Earth and the universe as a whole. "It is not true that I cast Susan for her name," laughs showrunner Russell T. Davies on behind-the-scenes companion show "Doctor Who: Unleashed. "But the name helped."