Crystal's Perilous Ride(1986)
(The first book in the Crystal Blake series)
A novel by Janet Bly and Stephen Bly
Fourteen-year-old Crystal and her friend Megan accompany Crystal's father to Idaho and find themselves investigating a series of strange occurrences in the town involving a gang posing as the community's leading citizens.
Used availability for Stephen Bly's Crystal's Perilous Ride
March 1986 : USA Paperback
March 2017 : USA, Canada, UK Kindle edition