Carol Lynley

Janet Willard

Brandon De Wilde

Arthur Bartley

Macdonald Carey

Maj. Malcolm Bartley, Ret.

Marsha Hunt

Jessie Bartley

Warren Berlinger

Ernie

Vaughn Taylor

Professor Willard

Roberta Shore

Cherie

William Schallert

George - Bank Vice President (uncredited)

Jenny Maxwell

Marion (uncredited)

Jesslyn Fax

Aunt Margaret