The Five-O team suffers a set back during their investigation on Hawaii Five-O. "Hoa Pili (Close Friend)" is the 19th episode of the show's third season.
Danny and McGarrett head to college when a professor is found dead in a tub of acid on Hawaii Five-O. "Kapu" is the 12 episode of the show's third season.
Danny and McGarrett end up handcuffed together when they are kidnapped on Hawaii Five-0. "Na hala a ka makua (Sins of the Father)" is the 14th episode of the show's fourth season.
Catherine goes undercover at the local roller derby to catch a killer on Hawaii Five-O. "Na Ki'i (Dolls)" is the 18th episode of the show's third season.