The overseer had taken him quite ways through the halls, until he came upon something called 'holding cells.' This is where he fumbled for his keys, while Catalin lay behind him, drug by the guard.
Besides the one who had a hold of Catalin, the Overseer was the only one in the halls, and because it was the shifting of hours, it didnt seem as if there were as many people about as usual.
Eventually, the overseer opened up the cell and threw in the kid, muttering something in Russian before looking turning and talking to his remaining guard for a second, saying something along the lines of 'Well see if this works tonight.'