It’s a hot, hot summer time, and in the depths from the Toronto Transit Authority’s Lost and Found out, 17-year-old Duncan is cataloging lost points and sifting through accumulated junk. And between Jacob, the cranky previous man who operates the place, and the endless dusty boxes overflowing with stuff no one will ever claim, Duncan’s just about had enough. Then he finds a little leather book. It’s a diary filled up with the dark and filthy secrets of a twisted brain, a serial killer stalking his victim in the subway. And Duncan can’t make himself quit reading.

What can you do with a book like this? How far do you go to capture a madman?

And what if period was running out . .