Forty million years ago...
They were the apex predators of the world's oceans, and the largest animals on earth.
Unlike their contemporaries, these prehistoric giants eluded extinction and have continued to live and thrive in hundreds of lakes throughout Canada and the United States.
In the exciting follow-up to Where Legends Roam, cryptozoologist George Kodiak has come to British Colombia's Lake Okanagan to solve the mystery of the creatures the Native Americans call naitaka.
He will also be reminded that some monsters come in human form.