Give them pleasure - the same pleasure they have when they wake up from a nightmare.
To me Psycho was a big comedy. Had to be.
For me, the cinema is not a slice of life, but a piece of cake.
I'm sure anyone who likes a good crime, provided it is not the victim.
Mystery is an intellectual process... But suspense is essentially an emotional process.
There is nothing to winning, really. That is, if you happen to be blessed with a keen eye, an agile mind, and no scruples whatsoever.