That Darn Cat! was a 1965 thriller comedy film starring an English actress who won a BAFTA Award for Most Promising Newcomer for her performance in what 1959 film?
Hayley Mills:  The daughter of Sir John Mills and Mary Hayley Bell, and younger sister of actress Juliet Mills, Mills began her acting career as a child and was hailed as a promising newcomer, winning the BAFTA Award for Most Promising Newcomer for her performance in the British crime drama film "Tiger Bay" (1959), the Academy Juvenile Award for Disney's "Pollyanna" (1960) and Golden Globe Award for New Star of the Year – Actress in 1961.
i don't know