num_pages: 160
description: Frank and Joe Hardy investigate when danger threatens Bayport's new self-defense school and find themselves up against a ruthless real-estate developer out to buy the building in which the school is located.
language: English
title: In Self-Defense
titlecomplete: In Self-Defense (Hardy Boys: Casefiles, #45)
genres: Young Adult, Fiction, Mystery
ratings_count: 134
series: The Hardy Boys Casefiles
publisher: Simon Pulse