The daughter of Police Chief Kostas Charitou has successfully completed her doctoral exams in law and is starting her vacation in Crete with her beloved.

Just before the ship carrying 300 passengers reaches Souda, it is hijacked by a group of masked individuals who give one-word commands in English. The police chief and Adrianne rush to Crete, where police and military forces and relevant experts from abroad have gathered.

However, Charitou's paternal anxiety gives way to duty, as the police chief must return to Athens to solve the strangest crimes. The murderer is executing advertising models, threatening to continue killing until the media, primarily television, stops airing advertisements.

The two seemingly unrelated cases of piracy and murder, after Charitou's persistent and subversive investigation process, turn out to have the same origin.

The Major Shareholder is one of the strongest novels by the internationally acclaimed Petros Markaris.