Also winning the acting plaudits though is the villain of the piece, played by Dervla Kirwan. She’s scene-stealingly good here, and next to her, the returning Cybermen look surprisingly tame, even considering the surprises that the episode throws up as it enters its final act. The Next Doctor isn’t a perfect episode by any means, and the terrific Christmas Invasion is surely the best Yuletide installment to date. But it’s an entertaining, busy, and ambitious hour, and worth seeing for Morrissey and Kirwan alone. --Jon Foster