When the elevator goes down, the subtraction starts and so does the magic. Ben sees crazy things everytime the door opens. Ride along as he subtracts his way down to the lobby, and decide for yourself if it's elevator magic.
- ISBN10 0064467090
- ISBN13 9780064467094
- Publish Date 20 April 2016 (first published 16 August 1997)
- Publish Status Active
- Publish Country US
- Publisher HarperCollins Publishers Inc
- Imprint HarperCollins
- Format Paperback
- Pages 40
- Language English