Arden, William

Three young sleuths uncover a mystery buried since World War II when they come to the aid of trouble-plagued environmentalist who is protesting the drilling of off-shore oil wells.

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

Searching for a legendary pirate treasure, the three investigators find a band of modern day pirates.

The Three Investigators foil a plot to kidnap the son of a political leader in an African colony.

The three investigators go on a high-stakes treasure hunt to restore a fortune to the rightful heirs.

Three junior detectives investigate a mystery involving an Oriental chest, a sunken ship, and a baffling dual identity.

The Three Investigators solve a case involving an international gang of art forgers.

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

Mystery and music intertwine as the Three Investigators try to find the connection between a car-theft ring and a Latin rock band.