Nicky Hager is known internationally for his investigative writing. His first book, Secret Power (1996), won him a US journalism prize and led to a year-long European Parliament inquiry. Since then, his books, contributions to books, and articles have been published in many countries. His 1999 book, Secret and Lies, exposed an unscrupulous public relations campaign and Seeds of Distrust (2002) was a study of political management of the controversial genetic engineering issue. Hager's fourth book, The Hollow Men (2008), was a detailed expose of three years of politics within the conservative New Zealand National Party. The book, which prompted the resignation of the party leader when it was released, was adapted into a stage production and feature-length documentary film. His fifth book, Other People's Wars (2011), is the story of 10 years of New Zealand involvement in the war in Afghanistan and the wider war on terror. It was also adapted into a stage production. All these books were best-sellers and were published by Craig Potton Publishing. Hager has degrees in physics and philosophy, and lives in Wellington.