موجود در دریاچه اوگوپوگو

The Aldens are visiting Grandfather's friend Abby in Peachland, Canada--home of the mysterious lake monster called Ogopogo. When the children learn that Abby must sell her resort unless she can attract more business, they decide to help. But someone or something is trying to get in their way. Can they save the resort? The Aldens are visiting Grandfather's friend, Amy, at the Ogopogo Retreat in Canada. Amy rents cabins to tourists who hope to see the mysterious underwater creature, the Ogopogo, swimming in the lake. The Aldens visit Grandfather's friend at the Ogopogo Retreat and aided by puzzling clues, embark on a treasure hunt to prevent the retreat from being sold