Are you up for a thrilling adventure? When twelve year old Joe and his two younger sisters, along with their friend Will, visit a small village in the Scottish countryside, the children make a startling discovery while exploring the nearby woods. Follow the children as they are chased through a maze of tunnels, rescue a trapped dog, taken prisoner by a gang of men, survive a harrowing plane crash, ride an out of control mine cart, and more Book 4 in The Mystery Series, this adventure novel is set in 1950's Britain and will suit people who enjoy Nancy Drew, the Hardy Boys or the Famous Five.