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The Mystery of the Moaning Cave (Three Investigators Series #10)
The Mystery of the Moaning Cave - Three Investigators Series #10 Author:William Arden "We Investigate Anything" is the boys' motto, and this time they prove it by journeying to a ranch in the California mountains to look into a cave that moans, a legendary bandit who refuses to stay dead, and some very strange happenings in a deserted valley. What they find will keep you biting your fingernails on the edge of your chair if you a... more »re the nervous type, so beware!« less