Chantal Lavigne

In Mélodie mortelle, the French Télévisions film adaptation of Agatha Christie's The Sittaford Mystery, Chantal Lavigne is the secretary of Franck Soler, the owner of the "Disques Soler" record company. Chantal Lavigne is portrayed by Laure Josnin

Besides being an efficient secretary, Chantal is also an enthusiastic fan of the popular yéyé singer Nicky who is contracted by Soler's record company. Marlene, who is the president of Nicky's fan club later hands the presidency to Chantal after Nicky's death in a car accident.

Chantal's loyalty to Nicky has some sinister consequences. Towards the end of the show, Alice Avril goes missing. Earlier on Alice had been signed on as a singer by Franck Soler to replace Nicky. Almost immediately, Alice starts to get death threats. Marlene shows the death threats to commissaire Laurence, who notes that the letters were all neatly typed by someone who knew how to justify the text. These are signs of a professional secretary. Following this lead, Laurence and Marlene rush to the record company and discover Chantal in a basement about to kill Alice. It turns out that Chantal had drugged and kidnapped Alice with the intention of taking revenge. She blamed Alice for taking Nicky's gig away from her and indirectly causing her death.