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 to know. He was called to the investigative hunt by the presumptuous arrogance of murderers by their smug belief that they could kill without leaving a trace. There was always a trace, Gurney believed.

Except what if one day there wasn t?
Dave Gurney, a few months past the Mellery case that pulled him out of retirement and then nearly killed him, is trying once...

The first book in the Dave Gurney series, Think of a Number is a heart-pounding game of cat and mouse that grows relentlessly darker and more frightening as its pace accelerates

Threatening letters arrive in the mail over a period of weeks, ending with a simple declaration: "Think of any number...picture it...now see how well I know your secrets." Those who comply find that the letter writer has predicted their random choice exactly. But when oddities that begin as a diverting puzzle quickly ignite into a massive serial murder investigation, police are confronted with a...

In this latest novel from bestselling author John Verdon, ingenious puzzle solver Dave Gurney puts under the magnifying glass a notorious serial murdercase one whose motives have been enshrined as law-enforcement dogma - and discovers that everyone has it wrong.

The most decorated homicide detective in NYPD history, Dave Gurney is still trying to adjust to his life of quasi-retirement in upstate New York when a young woman who is producing a documentary on an infamousmurder spree seeks his counsel. Soon after, Gurney begins feeling threatened: a razor-sharp hunting arrow...