Str-S-d:

I’ll begin with Lucy. She is definitely first on the list. You can’t believe how it feels to be in the cafeteria and turn around and there she is staring at me like I’m some disgusting bug or vermin. Does she really think I WANT to be this way? I hate you, Lucy. I really hate you. You are my #1 pick. I wish you were dead.
As days pass with no sign of the missing girl, even the attention of Tyler, an attractive new student, is not enough to distract Madison from her growing sense of foreboding. When two more popular students disappear after their names are mentioned on Str-S-d’s blog, the residents of Soundview panic.
Meanwhile, Madison receives anonymous notes warning that she could be next. Desperate to solve the mystery before anyone else disappears, Madison turns to Tyler, but can she trust him when it becomes clear that he knows more than he’s sharing?
The clock is ticking. Madison must uncover the truth behind the mysterious disappearances . . . before her name appears in Str-S-d’s blog.

The day after anonymous blogger Str-S-d wishes the popular girl would die, Lucy vanishes. The students of Soundview High are scared and worried. Especially frightened and wracked with guilt is Madison Archer, Lucy’s friend and the last person to see her the night she disappeared.