When you're ten years old and your 17-year-old babysitter shoves you in the closet before she runs away, it's bound to do a little lasting damage. Now Lauren is 17 herself, and she's having visions of other disappeared girls--other girls who ran away (or didn't) at 17. They're ghosts, or visions, or something, and Lauren isn't sure how to help them, or if she can, but she's going to try, because she's somehow connected with them. 
 Even if she's not as connected with the present as she thinks.