Home » Circadian Optimization » The Decline Cast, Actors, Producer, Director, Roles, Salary The Decline Cast, Actors, Producer, Director, Roles, Salary Elena Rostova • Oct 10, 2026 • 6 min read Read in-depth coverage on The Decline Cast, Actors, Producer, Director, Roles, Salary. Guillaume Laurin playing as Antoine Marie-Evelyne Lessard playing as Rachel Réal Bossé playing as Alain Marc Beaupré playing as David Marilyn Castonguay playing as Anna Guillaume Cyr playing as Sebastien Marc-André Grondin playing as François Isabelle Giroux playing as Hélène Juliette Maxyme Proulx playing as Daphnée
