If you are familiar with the Inspector Banks novels, get ready for a noticeable change in the usual flow of the story. There are several things that are different in "Innocent Graves", but the first one that comes to mind is that Inspector Banks has a less prominent role in the story. Or maybe I should refer to is as less "screen time". This happens because there is a significant portion of the story that covers the trial of the accused in the murder of a sixteen-year-old girl. Here Robinson shows once again that he is willing to take risks, and even though he did not write a legal thriller per se, he did take a step in that direction, with a result that was more than adequate.
There are a couple of new characters in Bank's team, and since one of them presents a striking contrast with the boisterous Hatchley, I liked the result of this experiment. Also, the usual elements that make Robinson's writing special are present, especially the conversation fragments that give us great insight into the minds of the characters. I felt that he was successful with the construction of the mystery too, even though he could have crafted the ending a little better, instead of just letting it resolve by itself and fall on the lap of the police.
My main gripe with this installment has to do with the little development we see in the sub-plot having to do with Banks and his family. In previous novels we witnessed how the inspector and his wife started having issues after their kids left the nest, and it would have been interesting to find out how this progressed. After all, one of the main reasons why I read series is because I like the character development from book to book and the elements outside the main plot. I hope that in the next novel Robinson rectifies this and delivers another outstanding work!