I second Ray Bradbury's Fahrenheit 451. The Shadow of the Wind and Jonathan Strange & Mr Norrell are both really wonderful, with their historical setting and novel styles. The Shadow of the Wind especially is also a compelling mystery and fits in quite well with all your requirements.
Neuromancer by William Gibson, Foundation by Isaac Asimov, Ender's Game by Orson Scott Card might also interest you. These are all dystopian titles, but cross with other genres- for instance, Neuromancer crosses with cyberpunk and has all the hallmarks of a mystery, while Foundation is the beginning of a science fiction saga of unprecedented scope (and winner of the one-time Hugo award for best all-time series).
For something a little lighter, I've heard good things about the Hunger Games series, which, being dystopian fiction, might interest you too.
Also look out for Phillip K Dick, Neil Gaiman and China Miéville novels.