It's not really a proper George Gently series until George battles evil in high places (last week, it was only mid-places). Now he must cope not only (as per usual) with corruption in the ranks, but the vast bulk of corporate crime, as well as his bickering subordinates.
After a brisk morning run, George dashes off to investigate the suspicious suicide of Valerie Cullen. All seems straightforward, but George isn't convinced. He starts to delve into her past. She's a doctor, suffered from depression, and was estranged from her smarmy husband - also a doctor. Eventually, it becomes apparent that Valerie had been investigating health violations at an old factory - a fact which many people resented.