Jayne Brook (born September 16, 1960) 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.
Kindergarten Cop
(Zach's Mother)
Gattaca
(Marie Freeman)
Clean Slate
(Paula)
My Mother the Spy
(Alison Shaeffer)
The Robinsons: Lost in Space
(Maureen Robinson)
Into My Heart
(Kat)
Searching for David's Heart
(Claire Deeton, Darcy's mother)
Ed
(Lydia)
The Four Diamonds
(Irma Millard / Hermit of the Lagoon)
Last Dance
(Jill)
Don't Tell Mom the Babysitter's Dead
(Carolyn)
In the Best of Families: Marriage, Pride & Madness
(Kathy)
Mind Games
(Hannah Berrick)
A Brother's Promise: The Dan Jansen Story
(Jane Jansen)
The Sweet Life
(Katherine)
Doing Time on Maple Drive
(Karen)
Superman IV: The Quest for Peace
(Teacher - JFK High School)
Bye Bye Love
(Claire)
Look at Me Again
(Tina)
Castle
(Claudia Peterson)
The District
(Mary Ann Mitchell)
John Doe
(Jamie Avery)
CSI: Miami
(Mia Eckhart)
NCIS
Chicago Hope
(Diane Grad)
WIOU
(Ann Hudson)
Sirens
(Sarah Berkezchuk)
Imagine That
(Wendy Miller)
Rizzoli & Isles
(Senator Valerie Bloomfield)
Brothers and Sisters
(Bertha Wandell)
Grey's Anatomy
(Gwen Graber)
Star Trek: Discovery
(Admiral Katrina Cornwell)
Revenge
(Loretta Deaton)
Everwood
(Mrs. Rogers)
Without a Trace
(Anne Atkins)
Private Practice
(Dr. Meg Porter)
Eli Stone
(Rebecca Green)
Early Edition
(Dr. Diane Grad)
Boston Legal
(Rachel Lewiston)