History YMMV / Neuropath

* NightmareFuel: Sprinkled throughout the whole book, but especially toward the end.

* MagnificentBastard: Neil Cassidy is a charismatic neurologist and former college roommate of protagonist Thomas Bible utterly obsessed with Thomas' old philosophy of "the Argument." To convince Thomas to adopt the Argument's principles again, Neil executes a long, complex mind game through a series of murders and manipulation while ruthlessly rooting out any loose ends. Suave and eloquent enough to make Thomas continually question his own reality, Neil reveals he made Thomas' partner in the case to have been a mole of his own making; that Thomas' own beloved son Frankie is in fact Neil's; and uses a device he uses to rewire parts of Thomas' mind to show to him in perfect detail the fundamentals of the Argument, having previously used the device to erase all forms of human emotion and weakness from his mind to [[TheUnfettered perfectly devote himself to his master plan and nothing else]] without the hindrances of love and guilt.

* MagnificentBastard: Neil Cassidy is a bastard, but he's charismatic, charming, and absolutely in control in every situation he's in. It turns out he's more or less made himself this way; [[spoiler: as a result of rewiring his own mind]], Neil's incapable of any empathy or even surprise and he's a perfect example of TheUnfettered, flawlessly executing his twisted mind game against Thomas with virtually no blunders on his part.

* CompleteMonster: [[EvilFormerFriend Neil Cassidy]], an obsessive, charismatic neuroscientist playing God with the minds of others, willingly [[EmotionSuppression destroyed his own personhood]] to better demonstrate the fundamentals of the Argument, a complex, nihilistic philosophy ruling everything as a mental construct. After graduating from college by the side of his best friends Thomas Bible, Neil was covertly enrolled in the UsefulNotes/{{NSA}}, where he performed immoral mental experiments on prisoners before going rogue to utilize that knowledge on civilians. Neil demonstrates a sick obsession for Thomas and conducts a horrific mind game with him at the center to realign his thinking back to the Argument. Along the way, Neil uses his power over people's brains to have a porn star cut herself to death with broken glass after rewiring her brain to masochistic tendencies; has a business magnate cannibalize a young girl and forces him to enjoy the experience; steals billionaire Theodoros Gyges's ability to recognize faces and drives him insane, resulting in Gyges becoming a serial killer; and torments a televangelist with alternating sensations of divine relief and hellish damnation. This culminates in Neil murdering Thomas's--and possibly his own--four-year-old son Frankie and subjecting both Thomas and his ex-wife Nora to horrific mental and emotional torture that ultimately leaves Thomas broken as a person, all to demonstrate his twisted obsession with both Thomas and his long-abandoned philosophies. Suave, cool-headed, and utterly remorseless, Neil Cassidy took MindRape to an art form and left a trail of destroyed lives in his wake.

* CompleteMonster: [[EvilFormerFriend Neil Cassidy]], an obsessive, charismatic neuroscientist playing God with the minds of others, willingly [[EmotionSuppression destroyed his own personhood]] to better demonstrate the fundamentals of the Argument, a complex, nihilistic philosophy ruling everything as a mental construct. After graduating from college by the side of his best friend [[TheProtagonist Thomas Bible]], Neil was covertly enrolled in the UsefulNotes/{{NSA}}, where he performed immoral mental experiments on prisoners before going rogue to utilize that knowledge on civilians. Neil demonstrates a sick "love" for Thomas and conducts a horrific mind game with him at the center to realign his thinking back to the Argument. Along the way, Neil uses his power over people's brains to have a porn star cut herself to death with broken glass after rewiring her brain to masochistic tendencies; has a business magnate cannibalize a young girl and forces him to enjoy the experience; steals billionaire Theodoros Gyges's ability to recognize faces and drives him insane, resulting—and this might have been deliberate on Neil's part—in Gyges becoming a SerialKiller, known as the Chiropractor, who [[CruelAndUnusualDeath ripped out his victim's spines]]; and torments a televangelist with alternating sensations of divine relief and hellish damnation. This culminates in Neil murdering Thomas's--and possibly his own--four-year-old son Frankie and subjecting both Thomas and his ex-wife Nora to horrific mental and emotional torture that ultimately leaves Thomas broken as a person, all to demonstrate his twisted obsession with both Thomas and his long-abandoned philosophies. Suave, cool-headed, and utterly remorseless, Neil Cassidy took MindRape to an art form and left a trail of destroyed lives in his wake.

* FamilyUnfriendlyAesop: The whole book.

* HoYay: [[spoiler: Neil may be in love with Tom.]]

* CompleteMonster: [[spoiler:Neil Cassidy]].

* NightmareFuel: Liberally sprinkled throughout the whole book, but especially toward the end.

* HighOctaneNightmareFuel: Liberally sprinkled throughout the whole book, but especially toward the end.

* HighOctaneNightmareFuel: Liberally sprinkled throughout the whole book, but especially toward the end.
* YourMileageMayVary: The ending.

* YourMileageMayVary: The ending is rather divisive.