Maybe they were ghosts," said Annie. Don't be silly. There's no such thing as ghosts. said Jack. It must have been a mirage "A what? a Mirage. It happens in the desert all the time," said Jack. "It looks like something's there. But it just turns out to be the sunlight reflecting through heat." "How could sunlight look like people, a mummy box, and a bunch of cows?" said Annie. Jack frowned Ghosts she said. "No way," said Jack. "Look!" Annie pointed at the pyramid. Near the base was the sleek black cat. He was standing alone. He was staring at Jack and Annie.