Lamar Public Library

Teenage detectives Frank and Joe Hardy investigate a supposedly haunted house reported to be the hangout of criminals.

The Hardy brothers interrupt their investigations of jewelry-store holdups to answer a plea from their cousin on a New Mexico cattle ranch.

When a ferocious, wolf-life creature appears in a small town, the Hardy boys are engaged to clear the name of a young man who has a history of werewolves in his family.

Called in to investigate the theft of some statuettes stolen from the Eygptian Museum in New York, the Hardy brothers become involved in a deepening mystery which includes the possible overthrow of another country's government.

Their search for an Easter Island idol takes the Hardy boys to Easter Island and on to investigate the theft of government material in Antarctica.