The folder had not been there when I left for coffee.

I did not open the folder immediately.

I stood in the garage doorway listening to the patrol car fade toward the highway and watching the white delivery van through the hedge.

The van remained parked for almost another minute.

Then its headlights flashed once and it drove away.

My name was Nathan Vale.

I was forty-one, divorced, and the maintenance coordinator for the Westbrook public library system.

My work involved broken heating systems, fire inspections, leaking roofs, and the kind of paperwork that people usually noticed only when something failed.

I had never been a police officer or a private investigator.

I knew how to repair a water pump, calculate an equipment warranty, and tell when a contractor was charging taxpayers for work he had not performed.

That final skill mattered more than I understood on that Tuesday morning.

My daughter, Paige, was thirteen and lived with me on alternating weeks.

She was spending that week with her mother, Erin, across town.

For the first time in months, I was grateful that she was not home.

The blue folder was tied shut with an ordinary cotton shoelace.

A small handwritten label on its corner said RETURN TO THE NIGHT SHIFT.

I photographed it before touching anything.

Inside were copies of vehicle dispatch sheets, an employee schedule, several photographs of an ambulance, and a single-page statement signed by a woman named Isabel Wynn.

The statement began with a sentence that made me sit down.

I was on duty the night the ambulance disappeared from the route assigned to the Bellwood apartment fire.

Bellwood was not a name anyone in Westbrook had forgotten.

Eleven years earlier, a fire at an apartment complex on the edge of town had injured nineteen people and killed two.

One of the dead was a six-year-old boy named Jonah Reed.

I remembered his face from the newspaper and his mother’s voice at a town meeting the following winter.

The fire had been investigated, the building condemned, and the owners fined.

The ambulance service had received public praise for its response.

According to the blue folder, the ambulance scheduled to transport Jonah had been routed to an empty loading dock twelve minutes away.

A later dispatch entry assigned the same ambulance to the fire scene at the time the first vehicle actually arrived.

I read the two lines repeatedly.