The investigation is drawing to a close, the murderer has confessed, but the police continue to have doubts. Laurent and Lucie try to get back to living a normal life again, but it's far from easy.
Cornered, Elsa and Laurent give themselves up. Questioned by Stéphanie, the best friend she hadn't seen for twenty years, Elsa adamantly having murdered anyone.
Laurent gives Elsa twenty-four hours to prove to him that she's innocent. Lucie becomes closer to her grandmother, but she also seems to be hiding things from her.
With Elsa now suspected of murder, Laurent and Lucie fear the worst. But Laurent receives an unexpected phone call and decides to set off in search of his wife without telling the police.
Elsa and Laurent, happy parents of Lucie, have lived a perfect love affair for twenty years. Until one morning, Elsa disappears without trace. Laurent's world collapses when the police inform him that Elsa was in fact a very different person from the one she pretended to be.