Early one morning, Chilly Billy was walking round the fridge inspecting things. Suddenly he heard a squeak of surprise coming from the butter dish.

Chilly Billy put down his carrot brush and walked up the wall of the fridge in his sucker boots. There was his friend, Chilly Lily, staring with wide eyes at the butter.

“What is it, Lily?” he said. “You look as if you’ve seen a ghost.”

“Oooo, Billy, I don’t know. But if it’s a ghost, it’s got lots of feet. Look!” And she pointed to the top of the butter. Billy looked and very nearly squeaked himself. There were footprints all over the butter!