A gunshot reverberated in the air at the same time a bullet sprayed dirt up from the ground just in front of Annette. Glancing up, she saw Paulo Volivar sitting on his horse at the edge of the cliff...While visiting a ranch in the Cochetopa Hills of Colorado, Annette and her best friend, Penny, get more than they bargained for when their new friend, Mandy, leads them on horseback into forbidden territory.A missing professor, a suspicious yellow envelope, and a mysterious old mountain man are the ingredients for mystery, adventure and a spark of romance, in this '60s era introduction to the Annette Vetter mystery series.