Author -
Publisher -Penguin 

Edition - 2010 
Binding - Paperback
Language - English
Pages - 500 
Condition -Used (Good Condition)

It begins with a letter . . .
The letter contains a request - think of a number, any number - and a sealed envelope.

And inside the envelope is that number.

When Dave Gurney, retired NYPD homicide detective, is contacted by an old college acquaintance about some startling letters he's been receiving, he thinks it's little more than a diverting but sinister puzz