La raíz del mal

Brittany, 2002. Six Swedish tourists meet by chance during the summer. Two couples and two singles with little in common, but the relaxed atmosphere is conducive to spending time together under the scorching sun. Five years later, the protagonists of those happy holidays begin to be killed one by one. Before, however, the culprit has warned Inspector Gunnar Barbarotti by letter: "I am going to kill Erick Bergman". The shrewd policeman will take on a case that will take him almost to the limit. What relationship exists between Gunnar and the killer? And, most importantly, what really happened on that beach? If he wants to arrest the culprit, Barbarotti, he must hurry, the race against the clock has begun and the murderer has no intention of stopping writing his macabre letters.