What is it?

That's what bothers him. A sense of something this strong? He doesn't pull Alex but he does get a sense that all the people around him are...

Waiting for something.

"...Apophenia."

No. This is not Apophenia. This is...

Stepping into the concourse he's surprised to see the people gradually thin out and thicken again - and then thin when they get to the food court.

That's where the energy is concentrated in a seemingly abandoned foodcourt where a single man is sitting with a cold up of tea.

Richard stops first.

"It's not really Warren."