Flight of the Bluebird (The Unintentional Adventures of the Bland Sisters Book 3) - Kara LaReau - Bog

Now that they've returned from the Uncanny Valley to find their home in Dullsville in absolute shambles, Jaundice and Kale are rescued by high-flying aviatrix Beatrix Airdale. This time they're jetting off (literally) to Egypt to uncover the mysteries of a magical scarab.
By way of Casablanca and after foiling multiple attacks along the way (thanks to Jaundice's nautical knot-tying skills and Kale's super-sleuth powers of observation), the Bland Sisters are reunited with their parents. But it turns out that mom and dad aren't as bland—or as "Bland”—as Jaundice and Kale remember. Thanks to their mother's old archaeology notebook, the Bland Sisters uncover their parents' real identities and help them achieve victory in one final family-filled adventure.