Death is calm, death is peaceful.
Well, death would be those two things if you didn't accidentally die at school. He probably didn't mean to, what sane person sets out to kill someone at school?
Marley is bright, funny and pretty, but all of those things isn't your 'get out of death free card'. Because she suddenly finds herself as a ghost and only the bad boy can see her - which means she'll have to trust him to help her find out if she really is dead or not, and a way to make everything peachy on earth before she comes to grip about giving up her family to be officially six feet under the ground.