Volume 5: When a series of suspicious mishaps befall several deep sea fishing boats, the Hardy Boys are called into action by ATAC (American Teens Against Crime) before any more teen "green horns" can be hurt. Volume 6: When a visiting dignitary's daughter is scheduled to attend a party at a horror-themed restaurant in New York City, ATAC agents Joe and Frank Hardy are enlisted as undercover protection! Volume 7: Traveling across the country on the maiden voyage of a sleek new modern train, the Hardy Boys find themselves framed for murder! Volume 8: The brothers Frank and Joe Hardy go undercover at a major skateboarding contest in Venice, California to find out which competitor is trying to kill off the competition-literally.