
While en route from Syria to Paris, in the middle of a freezing winter's night, the Orient Express is stopped dead in its tracks by a snowdrift. Passengers awake to find the train still stranded and to discover that a wealthy American has been brutally stabbed to death in his private compartment. Incredibly, that compartment is locked from the inside. With no escape into the wintery landscape the killer must still be on board. Fortunately, the brilliant Belgian inspector Hercule Poirot is also on board, having booked the last available berth.
If you want to completely escape our world then I recommend the old Conan books or the modern Brandon Sanderson starting with Stormlight Archive.
You have received plenty of Sci Fi recommendations but I will add my own personal favorite (this is one novel in the series): https://en.wikipedia.org/wiki/In_Death_Ground
If you want fiction that is grounded in reality with little to no fantasy elements then the murder mystery genre has quite a few gems that are fun to try and guess the twist of when you are reading. Murder on the Orient Express is great if you havn't experienced the story yet.
- And Then There Were None
- The Murder of Roger Ackroyd
- Murder on the Orient Express
- The A.B.C. Murders
The books are usually "slow burns", meaning they slowly build up to the big reveal at the end of the book. Agatha Christie is the master of making great payoffs though, so despite the initial slog, by the last page you are usually awash in dopamine/adrenaline (okay maybe that's a little exaggerated, but these books really do have good payoffs).
I recommend this order:
The Murder of Rodger Ackroyd
And Then There Were None (also titled Ten Little Indians)
Murder on the Orient Express
And Then There Were None
Murder of Roger Ackroyd
Murder on the Orient Express
The ABC Murders
The Murder of Roger Ackroyd
Murder on the Orient Express
Curtain
Can't tell you why without spoiling it though. You have to read them.
Murder on the Orient Express
Death on the Nile
Appointment with Death
Cat Among Pigeons