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THE HARDY BOYS ONLINE: An unofficial online resource for fans of the Hardy Boys books

Recurring themes

The books are pepperred with recurring themes. The following should have any regular reader nodding: eccentric old man is originally skeptical of the boys, but eventually comes around; the Hardys or their friends are falsely accused of a crime; the villain has a hideout involving elaborate caves or tunnels. This page will map the occurrence of common themes such as these.