With the squad investigating the murder of Martin Kennedy, Alex and DCI Gene Hunt have a difference of opinion on the case. Gene thinks it's just a simple murder while Alex is convinced that there may be a government conspiracy at play. The man worked at a nearby nuclear facility and there has been much public protest recently about nuclear energy. Alex is also concerned when she finds the man's name in her mother, Caroline Price's, appointment book. Her Mother's connection to him seems genuine and innocent but Alex subsequently learns something about her mother and family friend Evan White that she likely would have preferred not knowing. It also seems that Kennedy may have been blackmailing Price.
—garykmcd