The story follows two brothers — Peter, a barrister in his thirties nursing a cocktail of grief and prescription medication, and Ivan, a twenty-two-year-old chess prodigy who moves through the world with the social grace of a startled deer. Their father has just died. They barely speak to each other. Into this vacuum of fraternal silence, Rooney pours her signature alchemy: the way love becomes a kind of argument, and arguments become the only honest form of love.

What distinguishes 'Intermezzo' from Rooney's earlier work is its formal ambition. Peter's chapters arrive in fragmented, stream-of-consciousness bursts — semicolons breeding like rabbits, thoughts colliding mid-sentence. Ivan's sections breathe with more conventional prose, longer paragraphs, a gentler rhythm. The effect is architectural: you feel the difference between these brothers in your body before you understand it in your mind.

Peter is entangled with two women — Sylvia, his ex-girlfriend now living with chronic pain, and Naomi, a college student whose youth both thrills and shames him. Ivan, meanwhile, falls for Margaret, a woman in her mid-thirties whose own complicated past mirrors the kind of emotional labyrinth Peter has built for himself. Rooney has always been interested in the power dynamics of love, but here she pushes further: what happens when the power is not between two people, but within a single person at war with their own desire?

The chess motif is more than decorative. Rooney uses the game as a structural metaphor — the way certain positions force certain moves, the difference between tactics and strategy, the terrible clarity of endgames. Ivan's tournament scenes crackle with genuine tension, and Rooney writes about competitive chess with the kind of insider knowledge that suggests either deep research or a secret rating.

There are moments where the novel's intelligence threatens to become its limitation. Rooney's characters are relentlessly self-aware, capable of articulating their emotional states with a fluency that occasionally strains credibility. But this is a minor objection against a novel that achieves something rare: it makes you feel the weight of being known by another person — truly known — and the terror that accompanies that knowledge.

The final hundred pages are devastating. Without revealing the mechanics of the ending, I will say only this: Rooney earns every tear. The reconciliation between the brothers is not a resolution but an opening — a door left ajar through which light, tentatively, enters.