The Mystery of the Laughing Shadow

The Mystery of the Aztec Warrior

Alfred Hitchcock's Sinister Spies

The Black Island - Classic Colour Edition

Secrets of the Nile (Nancy Drew & Hardy Boys Super Mysteries #25)

The Runaway Bride

The Mystery Of Hollow Inn: Samantha Wolf Mystery Series #1 (Samantha Wolf Mysteries)

Scooby-doo Super Case Book #2

Alfred Hitchcock And The Three Investigators

In 'The Mystery of the Moaning Cave,' the tenth book in the Alfred Hitchcock and The Three Investigators series by William Arden, the young detectives Jupiter Jones, Pete Crenshaw, and Bob Andrews are on a new adventure. They investigate the eerie sounds coming from a cave in Rocky Beach, California. The moans are believed to be linked to an old legend about a pirate's hidden treasure. As the boys delve deeper into the mystery, they encounter various challenges, including deciphering cryptic messages, confronting suspicious characters, and navigating the dangerous cave itself. Their investigation leads them to uncover a cleverly disguised smuggling operation. With their usual resourcefulness and teamwork, The Three Investigators unravel the secrets of the moaning cave and bring the culprits to justice, all under the watchful eye of their mentor, Alfred Hitchcock.

Problem-Solving

Adventure

Friendship

Teamwork

Courage

Alfred Hitchcock and The Three Investigators, No. 10: The Mystery of the Moaning Cave

Discover Your Child's Next Read

The Mystery of the Laughing Shadow

William Arden, 1969

The Mystery of the Aztec Warrior

Franklin W. Dixon, R.H. Tandy, 1964

Alfred Hitchcock's Sinister Spies

W. Somerset Maugham, Alfred Hitchcock, 1966

The Black Island - Classic Colour Edition

Hergé, 1943

Secrets of the Nile (Nancy Drew & Hardy Boys Super Mysteries #25)

Carolyn Keene, 1995

The Runaway Bride

Carolyn Keene, 1994

The Mystery Of Hollow Inn: Samantha Wolf Mystery Series #1 (Samantha Wolf Mysteries)

Tara Ellis, 2014

Scooby-doo Super Case Book #2

Suzanne Weyn, 2004