A Montana ranch is robbed everytime there is a full moon. The Trenchcoat Twins are visiting a ranch in Montana where three Native American artifacts have disappeared, one on each of the past three full moons. Now there is only one artifact left--a large carving of a wolf--and Mary-Kate and Ashley have one night to solve the mystery before the next full moon. As the case takes Mary-Kate and Ashley down Wild Wolf River's whitewater rapids, the twins discover they might be in over their heads.
- ISBN10 0590294016
- ISBN13 9780590294010
- Publish Date 1 August 1998
- Publish Status Active
- Imprint Scholastic
- Pages 87
- Language English