Books where a major character is a sociopath and two faced

As the title says, I'm looking for books where the main character is a sociopath and two faced.
I don't want something too graphic or edgy like American Psycho. Id prefer an academia theme where the character is a topper and earns the trust of their teachers/professors, and their peers (kind of like Tom Riddle from the Harry Potter series), but anything works!
Any gender is fine, and the character can be the antagonist, protagonist, deuteragonist…anything!