When Margo Roth Spiegel man beckons Quentin Jacobsen in the middle of the night-dressed like a ninja and plotting an ingenious campaign of revenge, he follows her. Margo's always planned extravagantly and, until now, she's always planned solo. After a lifetime of loving Margo from afar, things are finally looking up for Q... until day breaks and she has vanished. Printz Medalist John Green returns with the trademark brilliant wit and heart-stopping emotional honesty that have inspired a new generation of readers.