The fearless Grandma Lipstick takes her twin grandsons, Jack and Will, who are celebrating their thirteenth birthdays, to the Cayman Islands. One of the highlights is to visit the famous Stingray City. When the three discover that stingrays are missing from their ocean habitat, Grandma Lipstick orchestrates a very daring search and rescue. Look for many other titles by Karen Snyder, a.k.a. Grandma Lipstick