Kids ruin everything. That kid ruined this episode.
Edit: also, what’s Moffat’s deal with medical treatment/hospitals? Did some nurse or doctor abuse him as a child? I get that some people don’t like going to the doctor or the hospitals, but every time Moffat writes a story that is even somewhat related to the subject, the doctors and nurses or medical personnel are always evil or monsters or something. In the first episodes of his era was Rory working as a nurse in a hospital that turned out to be a Cyberman factory.
Another is the two streams episode where Amy spends 30+ years dodging medical bots trying to inoculate her.