The Cresta Adventure — Ruth Benjamin

It was to be a quiet, restful summer vacation at Cresta, but instead, Lea Greenberg has the greatest adventure ever! When she and her mother arrive at the quaint coastal village, they find a charming cottage and a whole family of delightful neighbors, the Rubins, to liven up their stay. Lea and the Rubin twins, Devorah and Dina, quickly become friends and set out to explore the local attractions. At the Cresta Museum - a genuine castle that was once the elegant home of Lord and Lady Tranfield - they accidently discover a secret passage leading to a whole network of under¬ground caves. A jewish Children's Mystery Book.