Guest Stars Richard Herd as Milton Cooper Chris Mulkey as William Pettifer Co Starring Mariano Farrar as Clarence Whitmour Ma'a Tanuvasa as Guard Daisy Kim Murakami as Yuki Uncredited Jorge Garcia as Officer Mike Flanagan Ian Anthony Dale as Earl Blackstone Alex O'Loughlin as Steven McGarrett Sr - 1941 Scott Caan as Milton Cooper - 1941 Meaghan Rath as Alexa Alana Chi McBride as Capt. Charles Sumner Taylor Wily as "Biggie" Tupa Beulah Koale as Evan Kekoa Dennis Chun as Sgt. Naskiuchi
