Prince Caspian: The Return to Narnia is a novel

Novel

A novel is a book of long narrative in literary prose. The genre has historical roots both in the fields of the medieval and early modern romance and in the tradition of the novella. The latter supplied the present generic term in the late 18th century....

 for children by C. S. Lewis

C. S. Lewis

Clive Staples Lewis , commonly referred to as C. S. Lewis and known to his friends and family as "Jack", was a novelist, academic, medievalist, literary critic, essayist, lay theologian and Christian apologist from Belfast, Ireland...

, written in late 1949 and first published in 1951

1951 in literature

The year 1951 in literature involved some significant events and new books.-Events:*E. E. Cummings and Rachel Carson are awarded Guggenheim Fellowships.*Flannery O'Connor is diagnosed with lupus....

. It is the second-published book in the Chronicles of Narnia series, although in the overall chronological sequence it comes fourth.
While standing on a British

British people

The British are citizens of the United Kingdom, of the Isle of Man, any of the Channel Islands, or of any of the British overseas territories, and their descendants...

 railway station, awaiting their train to school after the summer holidays, Peter

Peter Pevensie

Peter Pevensie is a major fictional character in the children's fantasy series The Chronicles of Narnia by C. S. Lewis. Peter appears in four of the seven books; as a child and a principal character in The Lion, the Witch and the Wardrobe and Prince Caspian, and as an adult in The Horse and His Boy...

, Susan

Susan Pevensie

Susan Pevensie is a fictional character in C. S. Lewis' Chronicles of Narnia series. Susan is the elder sister and the second eldest Pevensie child. She appears in three of the seven books—as a child in The Lion, the Witch and the Wardrobe and Prince Caspian, and as an adult in The Horse and His Boy...

, Edmund

Edmund Pevensie

Edmund "Ed" Pevensie is a major fictional character in C. S. Lewis's Chronicles of Narnia. He is a principal character in three of the seven books , and a lesser character in two others .In the live-action films, The...

, and Lucy Pevensie

Lucy Pevensie

Lucy Pevensie is a fictional character in C. S. Lewis' The Chronicles of Narnia. She is the youngest of the four Pevensie children, and the first to find the Wardrobe entrance to Narnia in The Lion, the Witch and the Wardrobe. Of all the Pevensie children, Lucy is the closest to Aslan...

 are magically whisked away to a beach near an old and ruined castle.