Slide by Jill Hathaway is about a girl who can ‘slide’ into other peoples bodies for a brief time.  She has narcolepsy and when she passes out she slides into other people’s heads and ends up seeing through their eyes.  Then, one day she finds herself in the head of a killer, who is standing over the body of one of the girls from her school.  I’m only 50 pages in and the story’s already gripped me.