Leonard Freeman Creator, Producer, Executive Producer Jack Lord Det. Steve McGarrett Actor James MacArthur Det. Danny Williams Actor Kam Fong Det. Chin Ho Kelly Actor Dennis Cooney Manning West Guest Star Stewart Moss Ned Horvath Guest Star Jadeen Vaughn Carole Matthews Guest Star Lee Paul Paul Brechtman Guest Star Ann Prentiss Lannie Devereaux Guest Star Philip Leacock Producer Leonard Katzman Producer Bill Finnegan Producer Mark Rodgers Writer Abner Biberman Director