The 10 Best Mystery Novels of All Time

Ten strangers, one island, no way off. Christie's best-seller is the template for the closed-circle thriller, and its ruthless puzzle still lands. Claude and Gemini both had it as their #1.

Christie's twist-ending landmark broke the rules of fair play so brilliantly that readers still argue about it. ChatGPT had it as its #1, and it's the one book every engine kept near the very top.

Holmes, a spectral hound and fog-soaked Dartmoor. Conan Doyle's gothic classic is the most atmospheric Sherlock story ever written, and it stayed near the top of every engine's list.

Raymond Chandler's tangled Los Angeles tale gave us Philip Marlowe, wisecracking and weary. The plot is famously hard to follow, yet the voice and prose make it a hardboiled essential.

Sam Spade, a bird statuette and a cast of liars. Hammett's lean, cynical 1930 novel defined the hardboiled detective and cast a long shadow over crime fiction and film noir.

Often called the first great English detective novel. Collins builds a stolen diamond mystery from multiple narrators and clues, and nearly everything in modern detective fiction grew from this Victorian blueprint.

A medieval abbey, a string of monk deaths and a Sherlockian friar. Eco folds semiotics and theology into a murder mystery, proving a whodunit can be erudite and gripping.

A bedridden Inspector Grant investigates Richard III and the princes in the Tower from his hospital bed. Tey's clever, bookish cold-case story is the list's most unusual pick.

Christie's snowbound train, a stabbed millionaire and a carriage full of suspects. Claude kept it in its top ten, while ChatGPT and Gemini left it out. The solution remains one of fiction's most famous.

Harriet Vane returns to her Oxford college to find poison-pen menace on campus. Sayers blends detection with a love story and big ideas about work and independence, and ChatGPT was its main champion.