When the ghosts rebel

A series of murders with unknown perpetrator, unknown motives, the hero of the story (Sumer) desperately tries to uncover its secrets after the death of his close friend. The case becomes more complicated after discovering the existence of more victims (in the same distinctive pattern of killing in different countries around the world), which confirms that behind the case is a person (or group) with extraordinary capabilities and influence that enable them to pursue their enemies across the globe. On the other hand, the novel addresses the dilemma of human existence through discussions of topics such as human freedom and the heavy consequences that humans bear as a result of that freedom.