John Verdon is an acclaimed American novelist known for his gripping mystery and psychological thriller novels. Before embarking on his writing career, Verdon held a successful career in advertising and later retired to the serene solitude of upstate New York. His debut novel, "Think of a Number," introduced readers to detective Dave Gurney and received widespread praise for its intricate plotting and deep character development. Verdon's works often explore the dark side of human nature, with each book weaving complex puzzles that challenge both the protagonist and the reader. He continues to captivate audiences with his keen insights and storytelling prowess.