In the quiet town of Oakwood, the most terrifying weapon wasn't a gun—it was a genius mind.

When beloved math teacher Michael Evans vanishes from his spotless classroom, only one cryptic clue is left behind: a single line from Newton's Third Law scrawled on the whiteboard. For Detective Sarah Miller, it's the start of a nightmare with no witnesses, no motive, and no evidence. It's as if he simply ceased to exist.

The only person who might have seen anything is Alex Reed, a seventeen-year-old math prodigy and Mr. Evans's star pupil. Polite, articulate, and brilliant, Alex has the perfect alibi—a story so airtight it feels rehearsed. But as Miller digs deeper, she uncovers a chilling truth: Alex doesn't see people; he sees variables. His world is a web of complex calculations and cold, hard logic, where human life is just another problem to solve.

Driven by a gut feeling, Miller races to decode the boy's secret journals—a labyrinth of equations that maps out the blueprint for the perfect crime. To stop a killer who believes he's above emotion and beyond capture, she must outthink the unthinkable and find the one flaw in his perfect plan... before he decides to eliminate the next variable on his list.

A chilling journey into the mind of evil, where a perfect grade point average hides a murderous intent and the simplest equations can unlock the darkest crimes.