19 parts Complete Mature{{completed}} ((Possibly my favorite book so far!))
By definition, a sociopath has the following behaviors: superficially charming, manipulative and conning, lack of remorse, shame or guilt, lack of empathy, and ,lastly, incapacity of love. That would be Judeikas for you, a man that attends the Psychological Summer School yearly along with many other students between which Vivien also found himself.
Vivien is a guy with a passion for mental disorders so, naturally, he was being more and more intrigued by Judeikas. So what happens when Judeikas turns the tables?