Millie Gibson

If there's anything Russell T. Davies loves, it's a big, splashy two-part finale to wrap up a season of Doctor Who and "The Legend of Ruby Sunday" addresses one of this outing's biggest mysteries. 

Doctor Who does Bridgerton as the Doctor and Ruby visit the Regency era and Fifteen gets his flirt on with guest star Jonathan Groff. 

Doctor Who's new season has been on a puzzlebox tear ever since a random musical number broke out at the end of "The Devil's Chord." Let's consider the mavity of this situation with a twist at the end.

Doctor Who's "Dot and Bubble" is another Doctor-Lite episode, but one with a far larger gut punch than last week's "73 Yards."

Doctor Who's "73 Yards" is one part Welsh horror story, one part timey-wimey mystery, and a full-on showcase for companion Millie Gibson.

Former showrunner Steven Moffat returns to Doctor Who with "Boom", a war story that finds the Doctor trapped on a landmine and introduces an intriguing new face.