In 1958, Hayes' most infamous role—being a blonde notwithstanding—was the female out for revenge in the first woman's lib film, The Attack of The 50 Foot Woman. That same year she was a Communist operative duped by secret agent, Gene Barry, in Hong Kong Confidential and teamed with Barry again for seven episodes of his television series, Bat Masterson. The following year she was the female lead in Counterplot opposite Forest Tucker. It was back to television for five appearances on Perry Mason from 1960-65. She continued her occasional movie bit parts in the 1963 comedy, Who's Been Sleeping in My Bed, and the Elvis Presley musical-comedy, Tickle Me, in 1965. She ended her career with two appearances on, Gomer Pyle: USMC, in 1967.
In spite of the low-budget projects and many secondary roles, she accounted for herself surprisingly well as a professional actress. By the 1970s, Hayes became terminally ill from lead poisoning and was later diagnosed with leukemia. She died at the age of forty-six.

