Paris, 1644 – In the peace of an old French abbey, the monk Marin Mersenne devotes his days to prayer, gardening and the study of Mathematics. Four centuries later, a method bearing his name will endanger the entire planet.

Tampa (Florida), 2023 – The South Korean multinational Daeworx Technologies, whose global commissions range from satellites to nuclear power plants, is purchasing a small US company that has developed a new chip for the rapid generation of random numbers, such numbers being of crucial importance for data and telecommunications security. Someone, however, has decided to play a dangerous double game and it will be up to Soo-Min and her mathematician partner Yong-Soo, in an investigation involving trips to the Caribbean, ambivalent executives and emotional infidelity, to get to the bottom of the scheme and prevent compromised chips from reaching the market and jeopardizing the security of IT infrastructures all over the world.

This is the first international case for the young criminologist Soo-Min and her partner Yong-Soo and the fourth case in the series, following The Last Refrain, Team Code, and Hidden Signs.

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