The chief super went into the lecturers cell (Rees), and there was something in the ex police officers (dead girls father) file about an unresolved abuse case related to the one in the first episode I think.
So what was all that about? Was the chief super implicated, involved or something in the child abuse? Why does he want to speak to Rees alone? Was the ex police officer sacked because he was going to uncover something on that abuse case or was it because he became a drunk????