After Doctor Who Season 15's Big Cameo, I'm Worried A Landmark Timeless Child Reveal Happened Offscreen

Warning: Spoilers ahead for Doctor Who season 15, episode 5, "The Story and the Engine."Doctor Who season 15, episode 5, "The Story and the Engine," brings back Jo Martin's Fugitive Doctor for a cameo that's as brief as it is loaded with meaning, and her presence suggests Ncuti Gatwa's Fifteenth Doctor has done something drastic away from the prying eyes of the audience. Martin's brief addition to the Doctor Who season 15 cast marks her fifth episode of the show, and her first since 2022's "The Power of the Doctor." Originally entering the fray as part of Chris Chibnall's Timeless Child storyline, Martin's character represents a mysterious and worrying era for the Doctor.