Apparently it is at the very least based on a true story, a true crime anyhow..
"Chequered Justice is the story of a court case that many say should never have been heard and, some say, couldn’t have happened – and yet… Chequered Justice is a story inspired by true events!"
I have known John Bartlett for many years and his book is based on events that actually took place. I attended some of the trial and saw first hand the way events unfolded. The book has altered names etc so it could be written as a story rather than a biography. As the saying goes - Truth is stanger than fiction.