Seventeen-year-old Jill is a fairly normal high school senior whose focus is on getting a certain boy to ask her to prom, but four days a month she transforms into surly Jack who decides it is time he had his own life and a chance with the girl he wants.
- ISBN10 0375851917
- ISBN13 9780375851919
- Publish Date 26 August 2008 (first published 1 January 2008)
- Publish Status Out of Stock
- Publish Country US
- Imprint Random House Books for Young Readers
- Format Hardcover
- Pages 250
- Language English