The thing about Margo Roth Spiegelman is that really all I could ever do was let her talk, and then when she stopped talking encourage her to go on, due to the facts that 1. I was incontestably in love with her, and 2. she was absolutely unprecedented in every way, and 3. she never really asked me any questions...

Quentin Jacobson has always loved Margo from agar. So when she climbs through his window to summon him on an all-night road trip of revenge he cannot help but follow. But the next morning, Q turns up at school and Margo doesn't. She's left clues to her disappearance, like a trail of breadcrumbs for Q to follow.

And everything leads to one unavoidable question:
Who is the real Margo?