„The Secret of Hollow Earth“ is a horror novel, where the two main characters, 12 year old twins Emily and Matt, discover that they have supernatural powers. The connection between them is unique as well – they can communicate using telepathy, bring art to life and enter paintings at will. Members of the Protectors' Council are trying to take the childrens abilities for themselves and use them to access Hollow Earth – a place where all ancient demons and monsters are held in prison. The twins are forced to flee to an island off the western coast of Scotland, where their grandfather lives, who also possesses strange abilities. They do not find safety even on the island. Their pursuers stop for nothing to find Hollow Earth and unleash the forces that hide within. This would mean the end of the world as we know it. The survival of the twins might just be a fantasy.

„The Secret of Hollow Earth“ is the first novel aimed at the younger generation by Scottish
brother-sister duo John and Carol E. Barrowman.
John and Carol got along well even as children, despite the fact Carol tried to sell her little brother to their neighbours.
Both writers have always loved to read, especially science fiction and fantasy novels and comics. They are also joined by a mutual interest in art and travelling. They often visit art museums on their journeys.
John is a well-known entertainer – he has performed in musicals, films, has produced records. Carol works as college professor in Milwaukee, teaching English.