At 2:17 on a Thursday morning, a man dies on a Chicago freight terminal, in the dark stretch between where a temporary floodlight ends and an equipment route begins. Every sheet that put him there is signed. Every sheet is correct.
Kayla is a trainee loss-control engineer at a Chicago insurer. She reads incident files from industries that never read each other's and writes down whether the operation matched the paper. That morning, it did. That afternoon, in a file from a Wisconsin dam, she reads the same sentence at the bottom of a different death: all parties acted in compliance.
Her father worshipped correct operation and died believing in a pattern no one else could see. He was born in Chicago and left it as a child. She left New Mexico, where he died, and came back to the city he left, to stop seeing patterns. Now there are two names in a column she doesn't remember starting, in handwriting that looks too much like his.
So she tries to break her own idea. It won't break. Then a grieving stranger writes to her. He has lost someone to the same shape, and he has the data to prove it isn't in her head. For the first time, she isn't alone with it.
A complaint filed on time. A maintenance window approved. An alarm tagged out for calibration. A risk acceptance signed by the one person who won't survive it. Every element is legal in isolation. The killer is never present, touches nothing, breaks nothing.
Interleaved countdown chapters show the reader what Kayla can't yet see. To us, they read like plans. To her, they arrive as accidents.
When she finally sees one coming, she does everything right. So does everyone else. Being right is about to make her a suspect.
He tracks forms. She tracks names. He has never broken a rule. To stop him, she'll have to break one, and sign her name to it.