CHAPTER THIRTY-EIGHT TOBIASI PROP UP my shoe on the edge of Tris’s bed and tighten the laces. Through the large windows I see afternoon light winking in the side panels of the parked airplanes on the landing strip. GDs in green suits walk across the wings and crawl under the noses, checking the planes before takeoff. “How’s your project with Matthew going?” I say to Cara, who is two beds away. Tris let Cara, Caleb, and Matthew test their new truth serum on her this morning, but I haven’t seen her since then. Cara is pushing a brush through her hair. She glances around the room to make sure it’s empty before she answers. “Not well. So far Tris was immune to the new version of the serum we created—it had no effect whatsoever. It’s very strange that a person’s genes would make them so resi

