After a successful day in court, Greg Geldard is hoping to clear up some routine cases. Then a government laboratory receives a mysterious threat, a terrorist attack precipitates a multi agency emergency response and his investigations are seriously compromised by interference from the security service.

The enquiries lead down dangerous paths, with both Greg and someone he cares for put at risk, before he runs the perpetrators to ground. Then he's posed an ethical conundrum in court. Can hate ever be wholly sane?