In his debut novel, Unprovable, Scottish writer Gordon Cubie tells the story of Alan Gray - a man for whom everything goes wrong. His wife's left him. He's heavily in debt. Someone he hates is about to become his boss and will make his life even more miserable. What can he do? He comes up with a plan for murder. A murder he can't be found guilty of. The police catch him easily. They have fingerprints, DNA and witnesses. They know he did it - but they can't prove it. As the trial approaches - has Alan Gray been able to commit the "perfect crime"?