Coughlan brings her own radiance to Joy, her beautiful round face and bright blue eyes shimmering with tears, her hair a halo of gold, framed by a bright red beret and matching jacket. Visually and emotionally, she is a shining symbol of the season, its warmth, yearning, and heartache. And in the end, she is the star this episode demanded.

The Doctor is back for another holiday special. We'll show you where to watch the Doctor Who Christmas Special around the globe.