Film Marshall's first major film role was as Towanda Braxton in the 2016 musical biopic
Toni Braxton: Unbreak My Heart. That year she also appeared alongside
Josh Duhamel,
Al Pacino and
Sir Anthony Hopkins in the thriller
Misconduct. She later went on to appear in the 2018 war drama film
Indivisible. In 2023, she appeared in
Qasim Basir's semi autobiographical film
To Live and Die and Live.
Television Marshall had guest star appearances on
NCIS,
Major Crimes, and ''
Grey's Anatomy'' before having recurring roles on
ABC's
The Fix,
The CW's
Black Lightning and
Netflix's
Chilling Adventures of Sabrina. She landed her first series regular role in 2021 as Dr. Lex Trulie on the
CBS medical drama
Good Sam alongside
Sophia Bush. In 2023, she joined the cast of a pilot for legal drama series of
Matlock, with
Kathy Bates in the title role. The project was commissioned for a series, broadcasting on
CBS since September 22, 2024. The show has been critically acclaimed and is considered to be Marshall's breakout role, with her performance being praised by critics and receiving numerous Best Supporting Actress in a Drama Series award nominations, including at the
30th and
31st Critics' Choice Awards. ==Personal life==