Stella and her brother Max, of the Brite and Brite Detective Agency, put the mystery of Mayor Pickle's missing Pekingese on hold as they join the astronomy club in researching the problem of invisible dark matter in the universe.
- ISBN10 1417728922
- ISBN13 9781417728923
- Publish Date 1 February 2006 (first published 1 January 2006)
- Publish Status Out of Print
- Out of Print 7 April 2021
- Imprint Turtleback Books
- Edition Turtleback School & Library ed.
- Format Hardcover (Library Binding)
- Language English