Dave Gurney, ex-NYPD homicide detective, is contacted by an old college acquaintance about some startling letters he’s been receiving. When the acquaintance is brutally killed, Gurney finds...

When he was the NYPD’s top homicide investigator, Dave Gurney was never comfortable with the label the press gave him: super detective. He was simply a man who, when faced with a puzzle, wanted...

It begins with a letter... The letter contains a request - think of a number, any number - and a sealed envelope. Inside the envelope is that number...When Dave Gurney, retired NYPD homicide...