Regular price: $11.20

Free with 30-day trial
Membership details Membership details
  • A 30-day trial plus your first audiobook, free
  • 1 credit/month after trial – good for any book, any price
  • Easy exchanges – swap any book you don’t love
  • Keep your audiobooks, even if you cancel
  • After your trial, Audible is just $14.95/month
OR
In Cart

Publisher's Summary

Jack and Annie of Frog Creek, Pennsylvania, know they have to find one of the four secrets of happiness to help save Merlin the magician. But when the magic tree house whisks them off to a misty island in the middle of nowhere, they wonder how they will find anything. As the fog lifts, they see a huge three-masted ship - could it be a pirate ship?

When a small rowboat makes its way to shore, the three men inside don't look like pirates at all. The ship turns out to be the world's first floating science laboratory, filled with sailors and scientists. Instead of hunting for treasure, the ship's crew is searching for undiscovered sea creatures - and for the giant sea monster that seems to be following them!

Mary Pope Osborne takes young listeners on a stormy and thrilling ocean adventure packed with history, mystery, and magic.

©2008 Mary Pope Osborne (P)2008 Random House, Inc.

What members say

Average Customer Ratings

Overall

  • 4.6 out of 5.0
  • 5 Stars
    36
  • 4 Stars
    11
  • 3 Stars
    1
  • 2 Stars
    1
  • 1 Stars
    1

Performance

  • 4.7 out of 5.0
  • 5 Stars
    24
  • 4 Stars
    4
  • 3 Stars
    2
  • 2 Stars
    0
  • 1 Stars
    0

Story

  • 4.5 out of 5.0
  • 5 Stars
    23
  • 4 Stars
    5
  • 3 Stars
    2
  • 2 Stars
    1
  • 1 Stars
    1