Caleb and Tris exchange a look. The skin on his face and on her knuckles is nearly the same colour, purple-blue-green, as if drawn with ink. This is what happens when siblings collide - they injure each other in the same way.

Pride is what killed Al, and it is the flaw in every Dauntless heart. It is in mine.

I wake wondering how I did not notice, every day I sat across from her at the breakfast table, that she was full to bursting with Dauntless energy. Was it because she hid it well? Or was it because I wasn't looking?

Then his eyes focus on something over my shoulder, and he starts walking. I turn to see Uriah jogging from the elevator bank. He is grinning. “Heard a rumor you were a dirty traitor,” Uriah says. “Yeah, whatever,” says Zeke. They collide in an embrace that looks almost painful to me, slapping each other’s backs and laughing with their fists clasped between them.

I hear my heartbeat. I have been looking at him too long, but then, he has been looking back, and I feel like we are both trying to say something the other can't hear, though I could be imagining it. Too long - and now even longer, my heart even louder, his tranquil eyes swallowing me whole.

Sorry, am I being rude?" she asks. "I'm used to saying whatever is on my mind. Mom used to say that politeness is deception in pretty packaging

So now we all know," says Four, quietly, "that you are afraid of a short, skinny girl from Abnegation." His mouth curls into a smile.