Polygraph (French: Le Polygraphe) is a film by Canadian director Robert Lepage, released in 1996. The film stars Marie Brassard as Lucie Champagne, an actress who is given the role of Marie-Claire in a film dramatizing a real-life murder, and Patrick Goyette as François, Lucie's former boyfriend who was Marie-Claire's neighbour and is a suspect in the real crime. The film's cast also includes Josée Deschênes, Maria de Medeiros, Peter Stormare, Marie-Christine Lê-Huu and Richard Fréchette. ()