An eerie moaning sound is coming from a cave where a young bandit disappeared many years ago. Ranchers nearby figure he must still be alive. The Three Investigators set out to explore the moaning cave and soon wish they had come armed with more than a flashlight! Part of a classic series originally published beginning in 1964.

An old trunk involves the three investigators with dangerous criminals seeking a cache of stolen money.

A fiery bandit rides again -- or does He?

While vacationing on a California ranch, three boys decide to investigate strange wails that come from a mysterious cave where a famous outlaw disappeared.

The Three Investigators are hounded by supernatural forces as they attempt to recover a stolen sculpture of a legendary wolf-dog.

In searching for a lost parrot who recites Shakespeare with a stutter, Jupiter Jones' firm of young detectives becomes involved with a missing masterpiece.

The Three Investigators search for a stolen statue only to find that it has mysteriously come to life.

The Three Investigators are assisted by a Greek youth as they search for clues to a mysterious thief on an island once inhabited by pirates.