Eva Ibbotson

When their parents go to America for the summer, Madlyn and Rollo are sent to their great-aunt Emily and great-uncle George at Clawstone Castle, home of the legendary and mysterious Wild White Cattle of Clawstone Park. But times are hard at Clawstone, as the fancier castle down the road attracts all the tourist …

The Great Ghost Rescue is a children's novel authored by Eva Ibbotson. It was published by Macmillan in 1975. The story deals with a ghost called Humphrey the Horrible. A film adaptation of the novel debuted in 2011.