Writing my second novel, The Forbidden Zone, an action thriller set in the build up to WW2:

In the build up to WW2 diamonds were essential for the precision manufacture of military equipment. Britain, Nazi Germany, Europe, America and Japan were all gearing up for war. But most of the diamond mines in the world had been closed since the Wall Street crash of 1929 and there was a critical shortage.  In 1939 the scramble for smuggled and illicitly mined diamonds was unprecedented, particularly from Africa.  Britain and the Union of South Africa were at the forefront of protecting the mines and breaking the smuggling rings supplying Nazi Germany.  It became violent, bloody and personal. It was a race against time.

The key protagonist is Harvey Tremayne, a mining engineer from Camborne School of Mines, working for the worlds largest diamond mining company in South West Africa. He is tasked to thwart an iminent attack by the Nazis to steal diamonds, but more important to him, he's on a journey of revenge.​