This woozily terse potboiler, adapted from a 1963 Georges Simenon novel, begins with a kiss, or, perhaps more properly, a bite. Esther Despierre (Stéphanie Cléau) has bitten Julien Gahyde, played by director Mathieu Amalric, on the mouth, drawing blood. Currently, the pair are carrying on an adulterous affair in the titular blue room in a provincial hotel in a state of damp, post-coital dishevelment. As the liaison plays out, Esther begins to ask a series of leading questions: "Could you really spend your life with me?"; "Can you imagine what our days will be like?"; "If I were free, could you free yourself, too?" Julien responds in a way that is both perfunctory and ill-conceived, absently giving Esther the answers he expects she wants, like he's thinking with his dick, or maybe just not thinking at all.