There are still so many unanswered questions about Michael Madison.
For more on this we turned to Criminal Justice professor David Licate, from the University of Akron.
Family and friends have described Madison as friendly and normal and yet he is accused of three murders. Is this surprising?
What are the characteristics or qualities that a serial killer might have? Do they operate a certain way? Is there anything that has struck you so far about Michael Madison? What are some of the things that we could find out about Madison?