|Interest Level||Reading Level||Reading A-Z||ATOS||Word Count|
|Grades 4 - 8||Grade 6||n/a||5.4||34957|
Frank and Joe Hardy are investigating a mysterious old house high on the cliffs above Barmet Bay when they are frightened off by a scream. The boys return to the apparently haunted house when they make a connection between the place and a smuggling case their father is working on. When their father goes missing, they have to investigate the caves beneath the house and confront the smugglers.
Hardcover, 180 pages
Published on January 1, 1959 by Grosset & Dunlap