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In the aftermath of the 2008 financial collapse, Gabriel Lockley sets out to expose what he calls the “Beautiful Mathematics of Catastrophe” — the hidden architecture that allowed powerful institutions to profit from systemic failure. Alongside his reclusive, algorithmic genius brother Michael, Gabriel builds Lockley Capital into a precision weapon disguised as a hedge fund. Their Ten Doors algorithm quietly turns the market into a battlefield. But their war is financed by a man who helped design the very system they’re trying to dismantle — the enigmatic Victor Ashworth, a shadow architect of the crisis whose motives remain deliberately unclear. As Gabriel closes in on the firms that engineered collapse, alliances fracture, loyalties blur, and a dangerous entanglement with Elena Hale complicates everything. What begins as exposure becomes leverage. What begins as justice becomes profit. And when the final trade is executed, Gabriel must confront a chilling truth: he has not destroyed the system. He has proven he can operate it better than the men who built it. Lockley Rules is a cerebral financial thriller about power, moral inversion, and the invisible hands that move the world long after the markets close. Comparable works include The Big Short; The Night Manager; Succession; Billions