A SHEFFIELD-BORN criminologist has chosen the Spanish Civil War as the backdrop to his debut novel.

The Sentinel, written by Mark Oldfield, 55, flits between the life of a present day forensic scientist and a 1950s secret police officer hunting down enemies of the state.

“The book reflects some aspects of the dark years of Franco’s dictatorship,” said the criminologist turned author, a regular visitor to Spain since 1976.

The Sentinel is available on Amazon