Notes

"In a large valley lies a geographical feature known as Jelly Mountain. ... Its straight sides mean the top has never been explored and there are many rumours about strange creatures inhabiting it. Efforts to explore have met with disaster, and this has only made the mystery and fear stronger. Then a light plane crash-lands after buzzing suspiciously around the top of Jelly Mountain, and twins Jason and Jessy become embroiled in a mystery that is not without danger and which is set to rock the whole world"-