Tower of Time - Island of Fog, #12

What could a witch possibly want with a kraken's eyeball? It doesn't even fit in her cauldron! The story goes that a bold captain and his crew battled a sea monster and gouged out its eye. It would have been the catch of the century if they'd made it back alive. Instead, all that remained was a lifeboat carrying four dead men and their ghastly treasure. When the giant eyeball goes missing from the science laboratory, Hal and his shapeshifter friends follow the trail to Madame Frost, a sinister witch in the woods who has devised a way to peek at events from the distant past .