A morbid obsession
A recidivist
An unhealthy interest
A total liar
A narcissistic tendency
A self serving attitude
Look at me I'm so right and proper

Now if Mr X was to attend a course on behaviour he would be set at a 'high risk' based purely on what he says acts does with his obsession continually returning to the same subject completely focused on the nasty detail creating story lines with a look at me only aren't I great everyone listen I tell the truth no one else is right,. Now breath in.