It's fair to say that in the majority of movies good overcomes evil and the hero is always victorious and gets the girl for good measure.
But how many movies can you think of where they don't go with the traditional Hollywood ending and it's the bad guy that wins?
It would seem that are quite a few and FemaleFirst has been taking a look, warning contains spoilers.
The Usual Suspects
Following a truck hijack in New York, five conmen are arrested and brought together for questioning. As none of them is guilty, they plan a revenge operation against the police.
The operation goes well, but then the influence of a legendary mastermind criminal called Keyser Söze is felt.
It becomes clear that each one of them has wronged Söze at some point and must pay back now. The payback job leaves 27 men dead in a boat explosion, only cripple Verbal Kint survives and he is brought in by police for questioning.
But Kint isn't what he seems as he is released from the station his stride begins to straighten and Keyser Soze is a free man.
Se7en
And it's another evil character for Kevin Spacey but this time he is serial killer John Doe in cop movie Se7en, which also stars Brad Pitt and Morgan Freeman.
Doe commits a string of murders to demonstrate the seven deadly sins in people before handing himself into the police.
Howe does he win? Well I will tell you guilty of Envy Doe kills Mills', Pitt, wife sending her head to a remote locate where only he, Mills and Somerset, Freeman, will be found.
Mills kills Doe as an act of wrath, therefore completing Doe's plan.
Primal Fear
An adaptation of William Diehl's 1993 novel that follows a young alter boy Adam Stampler who is accused of killing an archbishop.
But Aaron appears to suffer from a multiple personality disorder and Roy is the more violent of the two personalities.
Roy appears in the courtroom and the case is dismissed and Aaron is ordered into a mental hospital.
However Aaron's attorney has worked out that he has been faking the disorder all the time and he is just a violent young man who is guilty of murder but free to walk.
One Flew Over the Cuckoo's Nest
In this case it's a bad girl, in the form of Nurse Rachet, that wins despite a good attempt from Nicholson's Randal McMurphy to help the patients of a mental institution.
Despite the patients all suffering various mental disabilities Rachet rules the ward with an iron fist giving very little time, help and attention to those in her care.
During McMurphy's time there he helps the patients begin to stand up to Rachet but it all comes to nothing as he receives a lobotomy and is put out of his misery by the Chief.
Although the Chief escapes his cage Rachet resumes her command of the ward and the rest of the patients.
Other movies that see the baddie come out on top include Memento, Rosemary's Baby as well as Hannibal and Saw.
FemaleFirst Helen Earnshaw