Writer: Steven Moffat
Director: Ed Bazalette
Producer: Peter Bennett
Series: 10, Christmas Special
Companion: Nardole (Matt Lucas)
Summary: The Doctor has returned to his travels, having spent 24 years with River Song before bidding her adieu for the last time. They arrive in New York City, where the Doctor meets a little boy named Grant, who is reading comic books. The Doctor points out that Superman and Clark Kent are one and the same, and the little boy recounts Spider-man’s origin. (I love how the Doctor imagines what would really happen if you got bit by a radiated spider.) He then sees that Grant can levitate, but has to get back in the TARDIS. The boy tells him he would be called “Dr. Mysterio”. Nardole is basically clowning around, so he doesn’t pay much attention.
He travels several years later, where a press conference has mobbed around a scientist, including a reporter named Lucy. Suddenly, the conference is interrupted by a superhero clad in black called The Ghost. Curious, the Doctor follows, discovering that The Ghost is in reality the same boy he met earlier, now all grown up. He’s also babysitting for Lucy, who has no idea who he really is. It’s like meeting Superman. In fact The Ghost has flight, superhuman strength, and X-ray vision. However, as he recounts to the Doctor, unlike Superman he can’t turn off the X-ray vision. “Puberty was hell”, he laments.
We learn that the scientist has in fact, been kidnapped by aliens called the Harmony Shoal. They are actually brains in jars and seek to replace every human brain with their own. The Ghost eventually learns the truth, and he, the Doctor, and Nardole team up to defeat them. All the while, the Ghost must deal with his infatuation with Lucy, who he’s known since childhood.