A man found murdered on his sailboat turns out to be one of the best friends of Laurent Crivelli, Gaëlle's father, and the main suspect in this case. The victim suffering from Charcot's disease wanted to put an end to her suffering in order to have a dignified end of life. Did Laurent Crivelli want to help his friend put an end to it? When it is discovered that Gaëlle's father was having an affair with the victim's wife, a question arises: euthanasia or murder. On the subject, the conflict between Melissa and Gaëlle will escalate. (thetvdb.com)