Sister Spy

In book 9 in the series, Adam is away on business leaving Archie to keep tabs on Skeet and the Geek Squad who have been participating in a series of geocaching challenges. The squad has been doing quite well and are invited to join a closed group where the caches are treasures worthy of finding. The problem is that the gang begins to suspect there may be more going on than simple treasure hunts. They enlist Ainsley's help to get to the bottom of things. Meanwhile Ainsley is nervously awaiting the okay to schedule a visit with a very important person in her life and Parker is assigned a story that seems to have more twists than the Gooseberry River.