Richard Osman's second Thursday Murder Club novel delivers another charming blend of cozy mystery and surprisingly dark thriller elements that will delight fans of amateur detective fiction.

The book follows the four elderly residents of Coopers Chase retirement village—Elizabeth, Joyce, Ibrahim, and Ron—as they become entangled in a case involving stolen diamonds, international criminals, and Elizabeth's mysterious past as a spy.

Osman excels at character development, particularly with Elizabeth, whose backstory as a former intelligence operative adds genuine intrigue to what could have been a purely cozy setup. The banter between the four protagonists crackles with wit and authentic friendship, while Joyce's diary entries provide both humor and heart.

The author skillfully balances multiple plotlines without losing focus, weaving together past and present mysteries with impressive dexterity. The pacing moves briskly, though some readers may find the coincidences that drive the plot occasionally stretch credibility.

Osman's background in television shows in his ability to craft memorable supporting characters, from the hapless police officers Donna and Chris to the various retirement home residents who feel like real people rather than mere plot devices. The book works best for readers who enjoy character-driven mysteries with a lighter tone, despite some genuinely violent moments that prevent this from being purely cozy fare. The writing style is accessible and engaging, making complex criminal plots easy to follow without dumbing down the material. However, readers seeking gritty realism or psychologically complex crime fiction may find the tone too whimsical, and the resolution relies heavily on Elizabeth's conveniently extensive spy network. The book assumes familiarity with the first novel but provides enough context for new readers to follow along. This is ideal for fans of British humor, ensemble casts, and mysteries that prioritize character relationships over procedural details. Skip it if you prefer hard-boiled crime fiction or find elderly amateur detectives implausible.