After the interview with the Vice-Chancellor, a file was sent to the Crown Prosecution Service as the Director of Public Prosecutions (DPP) has to take the decision as to whether or not to proceed with a trial. After a delay of about six months, the affair came to an end when the DPP informed Knight that no action would be taken as "there was insufficient evidence to support a successful prosecution on this occasion". The original book was returned, in a slightly tattered state, and restored to the university library.[65]