Jayne Brook (born Jane Anderson) (born September 16, 1960)[1] is an American actress, best known for her roles as Dr. Diane Grad on the medical drama Chicago Hope, as a series regular for five of the show's six seasons, and Mary Ann Mitchell on The District from 2000 to 2002.
Between 2017 and 2019, Brook had a recurring role as Starfleet Vice Admiral Katrina Cornwell in the series Star Trek: Discovery.
[citation needed] She attended New College in Oxford, England, and Duke University[2] on scholarship, earning a bachelor's degree in 1982.
During the late 1980s, she worked for a while in Great Britain, appearing in The Old Boy Network, a single season ITV comedy series about three ex-spies who set up as private investigators after the end of the Cold War.
From 2017 to 2019, Brook had a recurring role as Starfleet Admiral Katrina Cornwell on the first two seasons of Star Trek: Discovery.