Gavia and Morgan return after a brief break with an episode on French horror classic "Diabolique," directed by H.G. Clouzot and starring Véra Clouzot and Simone Signoret as women who collaborate to murder their abuser. Topics discussed include the film's pioneering use of horror and thriller tropes and techniques, how its classical style compares to the French New Wave, the relationship between the two central female characters, and more.