Wild Robert
by Diana Wynne Jones
Heather finds the mound when she tries to escape the hordes of tourists who invade the stately home where she lives. 'Wild Robert, I wish you were really under there!' she cries. 'You could come out and deal with the tourists!' All of a sudden, there is a smell like earth and strange spices. A voice says, 'Did somebody call?' Heather gets her wish, and nothing is ever the same again!