Gabriela McKenzie’s daughter has been kidnapped. In exchange for her safe return, her abductors demand two things: $400,000 in cash and a document known only as the “October List.”

Gabriela has thirty hours to deliver both. Coming up with such a huge sum of money is difficult enough. But Gabriela has no idea what the October List is, much less where it is or how to get it. All she knows is that her daughter’s kidnappers believe that her boss—who has suddenly, inexplicably vanished—possessed it, and they insist that Gabriela must be able to find it.

With the help of Daniel Reardon—a charismatic but mysterious man with an agenda of his own—Gabriela rushes headlong into a desperate search to solve the puzzle of the October List. And if she fails, she and her daughter will pay a fatal price.