The Mystery of the Dead Mans Riddle

The Mystery of the Aztec Warrior

The Black Island - Classic Colour Edition

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

Scooby-doo and the Dragon's Eye (Scooby-doo Graphic Novels)

The Spider Sapphire Mystery

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

Mr Penguin and the Lost Treasure

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 Dead Mans Riddle

Robert Arthur, William Arden, 1974

The Mystery of the Aztec Warrior

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

The Black Island - Classic Colour Edition

Hergé, 1943

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

Carolyn Keene, 1995

Scooby-doo and the Dragon's Eye (Scooby-doo Graphic Novels)

Joe Staton, John Rozum, 2010

The Spider Sapphire Mystery

Carolyn Keene, 1968

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

Tara Ellis, 2014

Mr Penguin and the Lost Treasure

Alex T. Smith, Alice Delarbre, 2017