&8220; Stand firm” said Peter, &8220;and wave like mad!” When their father mysteriously leaves home, Bobbie, Phyllis & Peter must move to a small cottage in the countryside with Mother. It is a bitter blow to leave their London home, but soon they discover the joys of the hills & valleys, the canal & of course, the railway. But with the thrilling rush & rattle & roar of the trains comes danger too. Can the plucky trio come to the rescue? &, most importantly, can they solve the mystery of why their father disappeared?