my thriller ideas

We have now been put into groups for our thriller title sequence, i am happy with my groups and hope we can work together well.
My first idea for a Thriller movie is to have a schizophrenic character (most likely male as they are the stereotypical villain). One side of him would be just an average man, friendly and smooth with the ladies but he will have snaps of a deranged man who will harm anyone near by. There would be no telling as to when he would switch between the two different characters and for how long he would be them. He has never been caught for the injuries he has inflicted on people because the bad side of him would escape before anyone found out.
The title sequence could consist of the man going out his normal day to day business but there's a hint of secrecy to him. Then it will show him going out in the evening with his guys friends and he will end up dancing with a girl. when hes alone with the night it will be going well until he snaps, then the sequence will finish in suspense.
The second idea is one that developed within the group. There's a man, lives alone in a dark place, isolated.
He killed a young girl and it seems her 'spirit' his haunting him when he sees his reflection.
For the title sequence it would begin by showing you the young girl happy and playing. And then there would be a dark scene and we could see a close up of a mans raging face. In the final part of the title sequence it would show the man looking depressed and then he sees himself in a reflection with the little girl covered in blood standing behind him.
Tomorrow we will talk through every one's ideas and decide which one will be the best.