Steve Hibbitt is a Detective Chief Inspector and operational SIO at Humberside Police. He is a major crime review officer and an ACPO approved Specialist Interview Advisor. He is the author of various ACPO position papers and has designed and delivered training for PIP Level 1 and 2 investigators and PIP Level 2 Specialist Interviewers. Hibbitt has been engaged in a senior role investigating the Hillsborough Football Stadium disaster and is a non-warranted senior investigator. He has developed and delivered investigative supervisor and management training to police forces and is an academic tutor for the University of Sunderland BA in Applied Investigation and MA in Investigative Management. Gary Shaw was formerly the National Investigative Interview Adviser and has many years' experience working on numerous complex and high profile investigations of national significance. He has been instrumental in developing professional practice in this area and is now a Professor at the University of Sunderland.