The Doctor turned a corner. "It is a holiday!" the Doctor said. "See? Holiday spirit, relaxing time, just---checking up on something! Probably going to turn out to be nothing at all! Don't worry!"

The Doctor could do enough worrying for the both of them.

He turned a corner, finding a large, sparkling ice skating rink covered in people. Any one of them could've been the one setting the radar off. A Graske, maybe? Maybe not? So difficult to tell!