Notes

217 pages.
First published: 1940.
Summary: Mike, Peggy, Nora and Jack are having a lovely summer at the Cornish seaside. While out exploring the Spiggy Holes caves, they discover a secret passage leading to the Old House on the cliff. But when they encounter the Old House's horrid new owner, the children are convinced he is hiding some secrets of his own.
Secret series ;
2.