Hervey was born Beulah Irene Herwick on July 11, 1909 in Venice, Los Angeles, California. Her father was a sign painter, and her mother a Christian Science practitioner whose pupil was English actress Emma Dunn. Dunn agreed to become Hervey’s acting coach during her childhood. Hervey attended Venice High School in Venice, Los Angeles, where she appeared in school theater productions.

As a teenager, Hervey married her first husband William Fenderson in 1929 and had a daughter, Gail; they divorced. In the mid-1930s, she was engaged to Robert Taylor. In 1936, she met and married actor Allan Jones. The couple had a son, singer Jack Jones, born in 1938. They divorced in 1957.

She began her acting career after being introduced to a casting agent from Metro-Goldwyn-Mayer (MGM). After a successful screen test, she was signed by the studio and made her screen debut in the 1933 film The Stranger’s Return, opposite Lionel Barrymore.

Though signed by MGM, Hervey was loaned by the studio and appeared in several films including United Artists’ The Count of Monte Cristo (1934) and With Words and Music, released by Grand National Films Inc.. In 1934, she was cast as the murderess Myra in the thriller Rendezvous at Midnight, but was replaced by Irene Ware.

In 1936, Hervey left MGM and signed with Universal Pictures. While at Universal, Hervey appeared in The League of Frightened Men (1937) and Destry Rides Again (1939) with Marlene Dietrich and James Stewart. She also intermittently freelanced at other studios, appearing in such films as Grand National Pictures’ The Girl Said No (1937), a musical comedy featuring music by Gilbert and Sullivan.

In 1943, Hervey was seriously injured in a car accident and was forced to retire from acting for five years. Though she did briefly return to acting for the stage play No Way Out, where she played Dr. Enid Karley, in 1944.

Hervey returned to acting in 1948 with the film Mickey, followed by Mr. Peabody and the Mermaid. By the early 1950s, she began appearing in television. Throughout the 1950s and early 1960s, Hervey appeared in several television series, including the crime dramas Richard Diamond, Private Detective, Peter Gunn, and Hawaiian Eye. She also made three guest appearances on Perry Mason: in 1958, she played Helen Bartlett in “The Case of the Black-Eyed Blonde”; in 1961, she played Grace Davies in “The Case of the Jealous Journalist”, and in 1963, she played Jill Garson in “The Case of the Lawful Lazarus”. She returned to theater with a role opposite Hans Conried in Take Her, She’s Mine, a comedy written by Henry and Phoebe Ephron, which had regional performances in Massachusetts and Connecticut in the summer of 1963. A reviewer from a local publication noted that Hervey “registers effectively” in her role. In 1965, she landed a regular role on The Young Marrieds, followed by a stint on the short-lived Anne Francis series Honey West as the titular character’s Aunt Meg.

In 1969, Hervey was nominated for an Emmy Award for Outstanding Single Performance by an Actress in a Supporting Role for her appearance on My Three Sons. After her roles as Mrs. Durant in the comedy Cactus Flower and as Madge in the 1971 thriller film Play Misty for Me with Clint Eastwood, Hervey retired from acting. She took a job working at a travel agency in Sherman Oaks, California and briefly returned to acting in 1978 with a role in Charlie’s Angels. In 1981, she made her last on-screen appearance in the television movie Goliath Awaits, which centers on a community of survivors from a World War II shipwreck who have survived decades living underwater.

Hervey died on December 20, 1998 at the age of 89 from heart failure at the Motion Picture & Television Country House and Hospital in Woodland Hills, Los Angeles. She was cremated, and her ashes returned to her surviving daughter.