"Relentless is Simon Kernick's fifth thriller and crime novel originally published in June 2006. Its sales were helped by the book being one of Richard & Judy's Summer Book Club recommendations in 2007. It was the 8th best-selling paperback, and the best-selling thriller in the UK in the same year. It has sold over 300,000 copies and was the 4th most borrowed book from UK libraries in 2008."@en . . "0-593-05471-7" . "352"^^ . . "The Public Image"@en .