Rise to Success: Career Highlights of Jill Hennessy

By Popular Timelines Editorial Team · Updated: April 3, 2026

Discover the career path of Jill Hennessy, from the first major opportunity to industry-changing achievements.

Jill Hennessy is a Canadian actress and singer prominent for her roles in American television. She gained recognition as prosecutor Claire Kincaid on Law & Order for three seasons. Hennessy further solidified her fame as the lead character, Jordan Cavanaugh, in Crossing Jordan for six seasons. Beyond television, she has appeared in films like RoboCop 3 and Most Wanted, also participating in independent films such as Chutney Popcorn and The Acting Class, where she also contributed as a writer and co-director.

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Full Timeline Career & Achievements

1988: Acting debut in Dead Ringers

In 1988, Jill Hennessy and her twin sister, Jacqueline, made their acting debut playing twin call girls in the film Dead Ringers.

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1990: Broadway debut in Buddy: The Buddy Holly Story

In 1990, Jill Hennessy appeared on Broadway in the musical Buddy: The Buddy Holly Story.

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1993: Appearance in RoboCop 3

In 1993, Jill Hennessy appeared as Dr. Marie Lazarus in the movie RoboCop 3.

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1993: Signs with Law & Order

In 1993, Jill Hennessy's career breakthrough occurred when Dick Wolf signed her as assistant district attorney Claire Kincaid in the NBC crime drama Law & Order.

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1996: Leaves Law & Order

In 1996, Jill Hennessy left the TV show Law & Order, where she played the role of assistant district attorney Claire Kincaid for three seasons.

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1999: Appearance in Chutney Popcorn

In 1999, Jill Hennessy appeared as Lisa in the film Chutney Popcorn.

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2000: The Acting Class mockumentary

In 2000, Jill Hennessy co-directed, wrote, and produced an independent film mockumentary with Elizabeth Holder called The Acting Class, which examines the challenges of a dysfunctional acting class.

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2001: Portrayal of Jackie Kennedy

In 2001, Jill Hennessy portrayed Jackie Kennedy in the film Jackie, Ethel, Joan: The Women of Camelot and appeared in Exit Wounds.

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2003: Cameo appearance in Abby Singer

In 2003, Jill Hennessy made a cameo appearance in the film Abby Singer.

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June 2009: Release of Ghost in My Head Album

In June 2009, Jill Hennessy released her album Ghost in My Head, which she recorded during sessions in Austin, Texas.

November 2009: Appearance on Mountain Stage

In November 2009, Jill Hennessy performed as a guest of the Indigo Girls on an episode of Mountain Stage and was later the focus of another episode of the show.

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2010: Performs at Lilith Fair

In 2010, Jill Hennessy performed at Lilith Fair.

2010: Stars in Small Town Murder Songs

In 2010, Jill Hennessy starred in the independent crime thriller Small Town Murder Songs.

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2012: Promotion of Zaxby's Zalads

In 2012, Jill Hennessy appeared as a veterinarian in the HBO series Luck, and promoted Zaxby's "Zalads" in a pair of television commercials.

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2015: Madam Secretary and release of I Do album

In 2015, Jill Hennessy appeared in several episodes of Madam Secretary, and in October of that year, her second album, I Do, was released.

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2018: Appearances on Bull and Yellowstone

In 2018, Jill Hennessy appeared on the Michael Weatherly series Bull as the mother of Cable McCrory and began playing the role of Senator Huntington on the series Yellowstone.

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