Janusz Puch is a Polish inmate who shares a cell with Remus Carey. Remus is unsure whether he is a real prisoner, or someone who has been put in the cell with him to try and find out what he can about him.
Remus describes his first sight of Janusz Puch thus:
They put me in with a Polish guy – Janusz Puch – who watched me arrive from behind a book. He pretended to read until the guard left and threw the door into the frame in a way that reminded us where we were. The moment the bolt shot into the lock, I saw Puch’s face transform. It blanked, as if he couldn’t understand what had happened. Not my arrival but the closing of the door. He looked up, his face expectant. He was waiting for something to happen.
Remus never discovers why Puch has been imprisoned, as the inmates don’t tend to discuss their crimes or sentences.