A boltzmon, remnant of a black hole, materializes in eleven-year-old Chris's bedroom and transports him to a parallel world, where he encounters the bitter woman his overbearing older sister will become, after his death, if he cannot convince her to change.
- ISBN10 0525461310
- ISBN13 9780525461319
- Publish Date 1 September 1999
- Publish Status Out of Print
- Out of Print 17 June 2021
- Publish Country US
- Imprint Dutton Children's Books
- Format Hardcover
- Pages 150
- Language English