Derek stopped short. I smacked into his back--not for the first time, since he insisted on walking in front of me. I'd been tripping on his heels and mumbling apologies the whole way. When I'd slow down to let him get farther ahead, he'd snap at me to keep up. Simon said. He was behind me--sticking to the curbside, walking as close as Derek. While normally I wouldn't complain about Simon being so close, I had the weird sensation of being blocked in. As we started forward again, I tried dropping back with Tori, who lagged behind, but Simon put his finger on my elbow and steered me back into place. I said. Tori said.