by Enid Blyton

Famous Five Book No 7

This time they are to go camping with Julian's school master, Mr Luffy. There they meet a boy called Jock who lives on a farm. When they go camping, they discover that trains run underground. People have seen 'spook trains' running at night without any drivers. When they meet Mr. Andrews and mention the spook trains to him, he is strangely against them going to see them.

The five (including Timmy the dog) and their new friend Jock are determined to find out why....

The book is original and has slightly yellowish pages.