How does Alan Furst use imagery in Night Soldiers?

Examples of Imagery:

"Time and again he touched the wall, traced with agonizing slowness, the faintly marked outlines of the four scratches her fingernails had made as she'd been taken through the door." pg. 240

"Suddenly, in this necropolis of ice and flatness and dead gray light, he had a reason to live, for the first time in his life. At last, there was something he wanted. He wanted to hurt them as they had hurt him." pg. 261