On a cross-country skiing trip into the Colorado Rockies, Frank and Joe find themselves facing the greatest challenge of all: survival. A woman dedicated to saving the endangered mountain lion has been shot, and the suspect is determined to track down the Hardy boys as well.
- ISBN10 0833597450
- ISBN13 9780833597458
- Publish Date 1 January 1992
- 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