When four siblings journey to the seashore for a holiday, one of them unwittingly summons the sister of a mermaid who is captured by a circus, and the children set out to save the imprisoned being. After a daring midnight rescue, the children's reward is an incredible journey beneath the waves and into the hidden kingdom of the mermaids. But they soon find themselves in a race against time as they struggle to prevent a war and save their new underwater companions...

The Railway Children is a children's book by Edith Nesbit, originally serialised in The London Magazine during 1905 and first published in book form in 1906. It has been adapted for the screen several times, of which the 1970 film version is the best known. The Oxford Dictionary of National Biography credits Oswald Barron, who had a deep affection for Nesbit, with having provided the plot. The story concerns a family who move from London to "The Three Chimneys," a house near the railway in Yorkshire, after the father, who works at the Foreign office, is imprisoned after being falsely accused...

When four siblings journey to the seashore for a holiday, one of them unwittingly summons the sister ofa mermaid who is captured by a circus, and the children set out to save the imprisoned being. After a daring midnight rescue, the children's reward is an incredible journey beneath the waves and into the hidden kingdom of the mermaids. But they soon find themselves in a race against time as they struggle to prevent a war and save their new underwater companions Here is a triumphant tale by one of the finest storytellers to ever write for children, and a pioneer of fantasy literature for this...