There is a prevailing trend in many shows (and movies) of today that fear to leave audiences in the dark for any amount of time. They leave little room for suspense, for great mystery, and worst of all, they leave little room for wonder.
Luckily, some shows are pushing this boundary. We're starting to see season-long mysteries on shows that experiment with just how far this 'slow burn' can be taken before audiences lose interest.
Rewind 12 years ago, when the landscape of television was still dominated by TV that dealt in more direct drama or comedy, and you will find that in the dark reaches of premium cable-and-satellite programming, there once was a show that dared to leave you asking questions. It challenged you to be patient, to look and watch with a close eye, to ponder deeper existential questions rooted in the conflicts of its characters.
Here was a show called Carnivale.