My favourite books are American Psycho (Bret Easton Ellis) and The Curious Incident of the Dog in the Night-time (Mark Haddon); they both give a fascinating insight into the mind of people psychologically "different" from the "normal society".

Apart from that, anything by Malorie Blackman is awesome as well.

And yes, before you say the latter are children's book -- I am a child, according to the laws set in the United Kingdom.

EDIT: I agree with Seb about Jekyll & Hyde, and liquidroof, I'm a student; why can't you read?