Throughout her time in Hollywood, Hilary Thompson carved out a notable career, particularly through her appearances in television movies and specials. Early on, she landed a role in the TV movie Manhunter (CBS, 1973–74), which helped set the stage for her television presence. Around the beginning of her acting journey, she was featured in the popular series Chico and the Man (NBC, 1973–78), further establishing her as a familiar face on the small screen.

Hilary Thompson continued to build her television resume with appearances in a number of specials, such as Risko (CBS, 1975–76) and Archie (ABC, 1976–77). She also took part in the TV movie Cruise into Terror (ABC, 1977–78), adding yet another memorable performance to her growing list of credits. Her work during this period extended to other television specials, including McLaren’s Riders (CBS, 1976–77) and The Archie Situation Comedy Musical Variety Show (ABC, 1977–78), where she showcased her versatility as a performer.

In addition to these roles, Hilary Thompson appeared in the television special Camp Grizzly (ABC, 1979–1980), further demonstrating her range in different genres and formats. She also took on a role in The New Operation Petticoat (NBC, 1978–79), continuing her presence in network television. Not limited to TV, she also appeared in the Kirk Douglas-led thriller The Fury (1978), expanding her reach into film.

In more recent years, Hilary Thompson remained active in television, with a role on Number 96 (NBC, 1980–81), proving her enduring presence and adaptability in the entertainment industry.