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Acting
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.

Star Trek: Discovery
as Admiral Katrina Cornwell

The Sweet Life
as Katherine

Revenge
as Loretta Deaton

Rizzoli & Isles
as Senator Valerie Bloomfield
Look at Me Again
as Tina

Castle
as Claudia Peterson

Eli Stone
as Rebecca Green

Private Practice
as Dr. Meg Porter

Brothers and Sisters
as Bertha Wandell

Grey's Anatomy
as Gwen Graber

Searching for David's Heart
as Claire Deeton, Darcy's mother

Boston Legal
as Rachel Lewiston

The Robinsons: Lost in Space
as Maureen Robinson

NCIS
as Lyndi Crawshaw

Without a Trace
as Anne Atkins

CSI: Miami
as Mia Eckhart

John Doe
as Jamie Avery

Everwood
as Mrs. Rogers

Imagine That
as Wendy Miller

The District
as Mary Ann Mitchell

My Mother the Spy
as Alison Shaeffer

Into My Heart
as Kat

Mind Games
as Hannah Berrick

Gattaca
as Marie Freeman

Early Edition
as Dr. Diane Grad

Last Dance
as Jill

Ed
as Lydia

A Brother's Promise: The Dan Jansen Story
as Jane Jansen

The Four Diamonds
as Irma Millard / Hermit of the Lagoon

Bye Bye Love
as Claire

Chicago Hope
as Diane Grad

Clean Slate
as Paula

In the Best of Families: Marriage, Pride & Madness
as Kathy

Sirens
as Sarah Berkezchuk

Doing Time on Maple Drive
as Karen

Don't Tell Mom the Babysitter's Dead
as Carolyn

Kindergarten Cop
as Zach's Mother

WIOU
as Ann Hudson

The Endless Game

Superman IV: The Quest for Peace
as Teacher - JFK High School