A mysterious text message suggests that Mia's tumble was no accident.

Mia tumbled headlong down the stairs at school, and is now in a serious coma. Her younger brother is haunted by mysterious messages on his cell phone, which leads him to dig further into the circumstances surrounding her accident.

It seems that many of Mia's friends are less than open about important details — but how suspicious is that, really, given that they are all teenagers with the normal hectic cocktail of romance and illicit activity? Just how did Mia come to fall down the stairs?