Book Review: Cold Sunset

Title: Cold Sunset

Author: William Boyd

Publisher: Grove Atlantic

Publication Date: November 3, 2026

Rating: 5 out of 5 stars

William Boyd has done it again. With Cold Sunset, the third installment in his Gabriel Dax series, he delivers a spy novel that feels less like genre fiction and more like literature.

It is 1964, and Cold War Moscow is doing what Cold War Moscow does best: simmering with paranoia, secrets, and the constant threat of exposure. Gabriel Dax, that most reluctant of spies — a travel writer who somehow keeps finding himself in the killing business — is tasked with delivering another mysterious
drawing to Kit Caldwell, a celebrated triple-agent living large as a Hero of the Soviet Union. Caldwell, convinced the KGB is closing in, wants Gabriel to do the unthinkable: smuggle him across the Russian border to Finland. With his enigmatic handler Faith Green pushing him forward, Gabriel is once again pulled into a world where loyalty is a moving target and trust is a luxury no one can afford.

Readers who came to Boyd through le Carré will feel right at home here. Cold Sunset inhabits the same shadow-drenched moral universe as The Spy Who Came in from the Cold and Tinker, Tailor, Soldier, Spy — all Cold War fog and psychological tension, with precious little in the way of gadgets or car chases. This is character-driven espionage at its most literary, and Boyd's storytelling genius is on full display. The prose is elegant, the atmosphere immersive, and the ethical murk that surrounds Gabriel genuinely uncomfortable in the best possible way.

As for Gabriel himself — three books in, he is now a three-time killer, which sits uneasily on a man who never asked for any of this. He is no James Bond. He does not sip martinis shaken not stirred; he drinks whatever he can lay hands on, and plenty of it. He shares his bed with three women in the course of this story, yet there is nothing glamorous about it. Boyd resists the seductions of the spy fantasy at every turn, keeping Gabriel grounded, flawed, and utterly human. That is precisely what makes him such compelling company.

My only caveat — and it is less a complaint than an observation — is that the ending is deliberately ambiguous, the kind of conclusion that leaves threads dangling rather than tying them off. It is both satisfying and maddening at once, clearly designed to presage, if not outright demand, a fourth and possibly final book to close things out properly. Consider yourself warned, and consider yourself hooked.

A big thank you to the publisher and NetGalley. I received a complimentary copy of this book. Opinions expressed in this review are completely my own.

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