Windy City Danger: 11 (Red Rock Mysteries)

Bryce and Ashley Timberline are normal 13-year-old twins, except for one thing—they discover action-packed mystery wherever they go. Whether it's tracking down a missing groom or uncovering a drug-dealing ring, Bryce and Ashley never lose their taste for adventure. Wanting to get to the bottom of any mystery, these twins find themselves on a nonstop search for the truth.