Ellis Baker is excited to be going on holiday. Her parents have been planning their overseas trip for months. But during the dark and stormy overnight flight, mysterious events begin to unfold. One passenger''s priceless necklace mysteriously disappears. Even spookier is the mysterious woman who also disappears without a trace. Could the stranger have stolen the necklace and somehow gotten off the plane without anyone noticing? Or was she really a ghost with a taste for fancy jewellery? Follow along as Ellis uncovers the clues and discovers the true identity of The 30,000-Foot Ghost!