The Casino at Balbec is a central social setting in the narrator’s second stay at Balbec, where encounters among Albertine, Andrée, Bloch’s sister and cousin, and other visitors intensify his fear that Albertine has relationships with women. The casino’s public rooms offer him apparent evidence—looks, silences, and meetings—but not certainty; its mirrors and crowds make observation possible while also exposing how easily suspicion turns ambiguous gestures into a private story.

A Public Stage for Private Suspicions

The casino’s ballroom is where the narrator sees Bloch’s sister and cousin enter with Albertine and Andrée. He refrains from greeting the newcomers because of his female companions, and Andrée says that she and Albertine share a strong dislike of “that sort of thing.” Albertine sits with her back turned toward the pair. Yet the narrator has already noticed a momentary, unusually attentive expression in her eyes as they appeared, followed by a still, dreamy gaze. The contrast between Albertine’s stated aversion and the look that precedes it becomes significant to him, although it does not establish what she feels or knows.

After the women leave, the narrator asks whether the fair-haired cousin is the girl who won a prize in the flower procession. Albertine says that she does not know which woman is fair and insists that she did not look at them. The narrator doubts this professed ignorance because Albertine sees people regularly along the seafront. When he remarks that the pair did not seem to look at them either, Albertine immediately replies that they did nothing else. She then points to a large mirror in the wall: while talking with him, she had watched the women in its reflection. The mirror turns her apparent lack of attention into an act of observation, but it still cannot tell the narrator what that attention meant.

The Casino and the Growth of Jealousy

The narrator’s interpretation of Albertine changes after Cottard’s comment at the small casino in Incarville. Although he does not accept Cottard’s opinion outright, Albertine begins to appear different to him, and seeing her can make him angry. He speaks about her in deliberately wounding terms, including when she might hear of them. His suspicions also come and go: after he visits Elstir’s studio unexpectedly, hoping to catch Albertine and Andrée together, he finds only Andrée. Albertine has chosen another day to visit with her aunt, and the narrator briefly takes Andrée’s presence alone as reassuring evidence that Cottard may have been mistaken.

That reassurance proves temporary. The narrator’s account describes how small observations at the casino and elsewhere revive suspicion: Andrée laying her head on Albertine’s shoulder and kissing her neck, an exchanged look, or a report that the two had gone down together to bathe. A memory that had seemed innocent when it occurred can later return in a more troubling light. In this way the casino’s social encounters feed a pattern in which suspicion subsides and then resurfaces under a new interpretation; the uncertainty itself becomes a source of distress.

The casino also gives the narrator a vantage point from which to watch Albertine’s responses to women he considers possible lovers. He describes her manner toward women as conspicuously cold and formal, and reads that reserve as potentially calculated to conceal an existing understanding. When a handsome young woman steps out of a motor-car at the far end of the beach, Albertine turns to look, then explains that she was examining the new flag over the bathing place. The narrator treats the explanation as evidence of concealment, though the gesture and excuse do not independently confirm his suspicion.

Encounters in the Hall and on the Beach

One evening, leaving the casino in the company of Albertine and Bloch, the narrator sees Bloch’s sister and cousin pass them arm in arm, kissing repeatedly and calling out loudly. Bloch lowers his eyes, seeming not to recognize his sister. The narrator is less concerned with the public display itself than with the possibility that the pair’s private language is directed at Albertine. The scene therefore links the casino’s visible social life to his fear of what may be taking place beyond his knowledge.

Other encounters around the casino encourage him to imagine a wider network of female desire. He notices a striking young woman at the beach and later sees her repeatedly fixing her gaze on Albertine in the casino. He interprets the looks as signs that the two may have known one another before and may be arranging another meeting. A few days later, however, he sees the same woman sit beside Bloch’s cousin, and observes their intimacy develop while the cousin’s husband is present. This episode establishes the young woman’s interest in women, but it does not prove a past connection with Albertine. The narrator’s fear draws those separate observations together without resolving the gap between them.

The Casino as a Theatre of Observation

The casino’s importance lies in the way it makes social life available to watching without making other people’s motives transparent. Its ballroom, hall, and adjoining beach gather people in public, where a glance can be noticed, a conversation overheard, or a departure followed. The narrator repeatedly converts such fragments into possible signs of secret attachment. At the same time, the mirror in the ballroom reveals that watching is not his alone: Albertine, too, can follow people while appearing to face elsewhere.

The casino thus becomes less a source of reliable knowledge than a theatre in which the narrator’s jealousy stages competing readings of the same conduct. Albertine’s reserve may look like innocence or concealment; a look may signify recognition or coincidence; a public explanation may reassure him briefly and then acquire a different meaning in retrospect. The setting concentrates the novel’s concern with indirect knowledge of other minds: the more the narrator watches, the more material he has for suspicion, but observation never gives him unambiguous access to Albertine’s inner life.