CBS | 8:00 pm
It can be hard to maintain a marriage when you keep getting kidnapped, as Kono and Adam (Grace Park, guest star Ian Anthony Dale) find again in the Halloween-themed episode "Ka hale ho’okauweli" (Hawaiian for "House of Horrors"). This time, the abductors apparently belong to a lethal cult. The rest of Five-0 probes the death of a medium who evidently was scared to death, literally. David Clennon ("thirtysomething") and Andrew Lawrence guest star.