Classic Detective Fiction:
* The Hound of the Baskervilles by Arthur Conan Doyle
* Murder on the Orient Express by Agatha Christie
* The Maltese Falcon by Dashiell Hammett
* The Big Sleep by Raymond Chandler
* Gone Girl by Gillian Flynn
Cozy Mystery:
* The Curious Incident of the Dog in the Night-Time by Mark Haddon
* The Thursday Murder Club by Richard Osman
* The House in the Cerulean Sea by T.J. Klune
* The No. 1 Ladies' Detective Agency by Alexander McCall Smith
* The Guernsey Literary and Potato Peel Pie Society by Mary Ann Shaffer and Annie Barrows
Hard-Boiled Mystery:
* The Girl with the Dragon Tattoo by Stieg Larsson
* The Silent Patient by Alex Michaelides
* The Guest List by Lucy Foley
* The Woman in the Window by A.J. Finn
* Verity by Colleen Hoover
Psychological Thriller:
* The Girl on the Train by Paula Hawkins
* The Chain by Adrian McKinty
* The Silent Patient by Alex Michaelides
* Sharp Objects by Gillian Flynn
* Rebecca by Daphne du Maurier
Historical Mystery:
* The Da Vinci Code by Dan Brown
* The Secret Keeper by Kate Morton
* The Seven Deaths of Evelyn Hardcastle by Stuart Turton
* The Alienist by Caleb Carr
* The Historian by Elizabeth Kostova
Crime Fiction:
* The Godfather by Mario Puzo
* The Wire by David Simon (TV series, but a great example of the genre)
* The Killing by Soren Sveistrup (TV series, but a great example of the genre)
* Mindhunter by John Douglas (non-fiction, but about the origins of criminal profiling)
* The Devil in the White City by Erik Larson (non-fiction, but a blend of history and crime)
Note: This is not an exhaustive list. There are many other great mystery books out there! I encourage you to explore different subgenres and authors to find what you enjoy most.