A blackout, a derailment, a flood—when disasters align with a mysterious countdown, Theo Cray, Jessica Blackwood, Brad Trasker, and Sloan McPherson hunt the engineer who scripts chaos. A train derails in Idaho, nearly causing a nuclear disaster. An inferno at a battery facility in Florida disrupts the electrical grid for days. A potentially devastating failure is discovered at Virginia’s Mud River Dam. To computational biologist Theo Cray, these aren’t mere infrastructure accidents. They are virtually undetectable acts of sabotage. Theo sees a mathematical pattern to the madness that few others can comprehend—except for his rogue FBI agent Jessica Blackwood, private security specialist Brad Trasker, and Florida underwater investigator Sloan McPherson. If Theo’s intuition and calculations are correct, the disasters are just a warm-up. The worst is yet to come—a catastrophe that could trigger the deaths of millions across the country. Now Theo and his team are on the hunt for a mysterious saboteur whose only motive is to spread panic and chaos. And with every tick of the clock, his unthinkable endgame is getting closer to becoming a terrifying reality.