__WIKIA_BANNER__ "Espionage is always a foreign affair." — Tagline, from the front cover The Borderline Case is the 25th book in The Hardy Boys Casefiles series.
__WIKIA_BANNER__ "Espionage is always a foreign affair." — Tagline, from the front cover The Borderline Case is the 25th book in The Hardy Boys Casefiles series.