Adam West. Adam West was 41 in The Girl Who Knew Too Much as 'Johnny Cain'.
Nancy Kwan. Nancy Kwan was 30 in The Girl Who Knew Too Much as 'Revel Drue'.
Robert Alda. Robert Alda was 55 in The Girl Who Knew Too Much as 'Kenneth Allandice'.
Nehemiah Persoff. Nehemiah Persoff was 50 in The Girl Who Knew Too Much as 'Lieutenant Crawford'.
Buddy Greco. Buddy Greco was 43 in The Girl Who Knew Too Much as 'Lucky Jones'.
Patricia Smith. Patricia Smith was 39 in The Girl Who Knew Too Much as 'Tricia Grinaldi'.
David Brian. David Brian was 55 in The Girl Who Knew Too Much as 'Had Dixon'.
Chick Chandler. Chick Chandler was 64 in The Girl Who Knew Too Much as 'Hunley Cobble'.
Lisa Todd. Lisa Todd was >> in The Girl Who Knew Too Much as 'Sugar Sweet'.
Laurie Mitchell. Laurie Mitchell was 41 in The Girl Who Knew Too Much as 'Trudell'.
Biff Elliot. Biff Elliot was 46 in The Girl Who Knew Too Much as 'Archie'.
Francis D. Lyon. Francis D. Lyon was 64 in The Girl Who Knew Too Much as 'Director'Charles A. Wallace. Charles A. Wallace was >> in The Girl Who Knew Too Much as 'Writer'Roger George. Roger George was >> in The Girl Who Knew Too Much as 'Special Effects'