Smuggler's Cove

Slip and Sach work as cleaners in a high-rise building. While cleaning an office, a messenger overhears Slip mention his given name, Terrance Mahoney. The messenger carries a letter addressed to 'Terrance Mahonoey, Esq.' and, by mistake, delivers it to Slip. The letter informs Slip that he has inherited a mansion on Long Island. The boys travel to the mansion and discover it is inhabited by diamond smugglers. The true owner of the house arrives, helps them defeat the smugglers, and rewards the boys by gifting them the house.