Eagle River Detectives, Book 5: Magnificent Marco and the Biddy Buddies continues this delightful series . If you like kid detectives or cozy mysteries you'll love these books.. Mystery & Adventure Friendship & Fun . This book has a FREE downloadable Abandoned Mine escape game with purchase. Missing pets, a suspicious accident and a weird art show grab the attention of ten-year-old Marco Herrera, a new member of the Eagle River Detectives. Time to call on his block lieutenants, a group of nosey neighborhood grandmas he recruited over the past year. With their help Marco is the first to know when anything new or exciting happens in the little town of Eagle River, Nebraska. Enter the Biddy Buddies. Four of Marco’s best lieutenants band together to form an undercover spy network that teams up smoothly with the Eagle River Detectives. Join Marco, the Biddy Buddies and the rest of the kid detectives in an exciting romp where young and old band together to keep the town safe and secure for both man and dog!.