‘Duns has ingeniously caught both the spirit of an era and the spirit of the books which made that era the golden age of spy fiction.’ – The Daily Telegraph on Free Agent

‘The key to Duns’ success is his ability to pen high-energy, enthralling action sequences allied to an impressive attention to detail, transforming the traditional spy classic into a compelling mirror of real-life history and politics... Breathtaking in its veracity and power.’ – The Lancashire Evening Post on Spy Out The Land

‘A masterly excursion back to the bad old days of the Cold War.’ – The Times on Song of Treason

‘This excellent book contains lessons that are still valid in the 21st century’ – Oleg Gordievsky on Dead Drop

‘A wholly engrossing and sophisticated spy novel set against a forgotten corner of 20th-century history. Fascinating and compelling.’ – William Boyd on Free Agent

‘The immediacy of Duns’ writing grabs and suspends the reader in a beautifully realized heartbeat of recent history.’– Kirkus Reviews on The Dark Chronicles