David Hodges started his police career on the beat in Didcot in the 1960s, then moved to West Oxfordshire before rising to take charge of Thames Valley Police’s communications department at Kidlington.

After retiring as a superintendent, he became a full-time writer and has published four crime thrillers.

He will sign copies of his memoir Reflections in Blue (Pharoah, £7.99) at WH Smith in Cornmarket, Oxford, at 11.30am on October 29.