After returning home from a break in Mexico, Olivia is keen to surprise her mom who she hasn’t spoken to since the Beach Case has been solved. As she passes by Bengt Sahlman’s house - one of their long-time neighbours –, she bumps into Sandra, Bengt’s 17 years old daughter, running out of the house in panic. Olivia rushes into the house but it’s already too late: Bengt is dead. The police quickly determine that it wasn’t suicide, and the case lands on Mette’s desk.

Meanwhile in Marseille, the corpse of an unidentified, dismembered woman is found and is soon all over the local news. Upon reading the French dailies, Abbas immediately recognizes the woman in question. He decides to go straight to Marseille to uncover what happened to the love of his life and asks Stilton to accompany him.