The Bad Books by Pseudonymous Bosch

Bad Luck
Secret Series Book #2

Book Two in the Secret Series by Pseudonymous Bosch takes place on a volacnic island. Clay and his friends must solve the mystery of the cave drawings that are attrating the attention of people outside the island. Clay's magical abilities are what will work to save them. The author of this series does it again by providing a series that readers can get excited about. The truth is, I cannot wait for the third book in the series!

Synopsis
At Earth Ranch, things can get a little magical (some might say strange). Intrepid readers will discover a runaway boy, fishy cruise ship, strange cave paintings, dragon-like footprints, and other mysteries that Clay and his friends need to solve. Danger, adventure, mischief, mystery, llamas, and a delightfully irreverent and hilarious narrator make bestselling author Pseudonymous Bosch's anticipated new novel irresistible.

This book, Bad Luck, was the second in the series. A link for the first book can be found below. 
To read a portion of Bad Magic Book One, click here http://www.thebadbooks.com/books.html
To read a portion of Bad Luck Book Two, Click here http://www.thebadbooks.com/book2.html

While I had an audiobook of Bad Luck, I think the book would have been devoured quickly be both me and my children.