The subject is Semiotics particularly Forensic Semiotics http://visual-memory.co.uk/daniel/Documents/S4B/sem01.html So be sure to add some theories from Semioticians mentioned above. This course is specifically FORENSICS Semiotics– and particularly use details from this book. https://books.google.ca/books?id=xKTpBQAAQBAJ&pg=PA26&lpg=PA26&dq=forensic+semiotics&source=bl&ots=pSwSqoN_qz&sig=8ZJvU4qIeS3SLX7OZRJPzKhvVDA&hl=en&sa=X&ved=0ahUKEwiq6vPciIzMAhXhzoMKHbTZAF04ChDoAQgaMAA#v=onepage&q=forensic semiotics&f=false It needs to be a cross disciplinary analysis on why humans are obsessed with murder, crime, uncovering mysteries of crime and murder. The premise of the conclusion should that human beings are obsessed with crime, and uncovering crime because they have an inherent quest for moral justice. Go back to Biblical times to the first reported murder of Cain and Abel and examples of Dexter. That resolving murder is because we have a quest to moral structure and solving evil. The whole against evil for good thing is inherent in human beings.