The performances at The Royal Theatre are extraordinary.

You'd have to see them to believe them! But that's the problem. Nobody can see them. Except Gracie, that is. Newly arrived in her favourite seaside town and its beautiful old theatre, Gracie's quickly making friends.

There's Mikey the Mod who wears a parka and drives a scooter, Miss Melluish whose skirt is missing, and Frank Stuart, the maker of mechanical elephants.

But the old theatre is under threat. Will Gracie and her friends be able to save their home, or is the curtain set to fall on their very last performance? 'Everybody should read Geraldine McCaughrean'Philip Reeve