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The Mystery of the Purple Pirat - William Arden
SUMMARY:Searching for a legendary pirate treasure, the Three Investigators find a band of modern day pirates. -
The Mystery of the Nervous Lion - Nick West
SUMMARY:Hired to discover why a wild-animal farm's tame lion has become unpredictably nervous, three young detectives begin an investigation that uncovers a smuggling operat... -
The Mystery of the Monster Moun - M. V. Carey
SUMMARY:The three young sleuths solve a case of double identity while investigating the legend of Monster Mountain. -
The Mystery of the Moaning Cave - William Arden
Product DescriptionWhile vacationing on a California ranch, three boys decide to investigate strange wails that come from a mysterious cave where a famous outlaw disappeared. ... -
The Mystery of the Magic Circle - M. V. Carey
Product DescriptionThree young sleuths uncover a coven of witches when they search for the missing memoirs of a movie star. -
The Mystery of the Laughing Sha - William Arden
Product DescriptionThe three investigators try to solve a mystery involving a gold Indian amulet and a weird laughing shadow that appeared to them in the night. -
The Mystery of the Kidnapped Wh - Marc Brandel
Product DescriptionThe three investigators, attempting to rescue a beached whale, end up searching for sunken treasure. -
The Mystery of the Invisible Do - M. V. Carey
Product DescriptionThe Three Investigators are hounded by supernatural forces as they attempt to recover a stolen sculpture of a legendary wolf-dog. -
The Mystery of the Headless Hor - William Arden
SUMMARY:When three junior detectives search for a valuable old Spanish sword lost since the Mexican War, the headless statue of a horse yields a clue. -
The Mystery of the Flaming Foot - M. V. Carey
SUMMARY:When an eccentric local artist disappears suddenly, the three investigators look into the matter.