
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.

The Sweet Life
as Katherine
Look at Me Again
as Tina

The Robinsons: Lost in Space
as Maureen Robinson

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

My Mother the Spy
as Alison Shaeffer

Into My Heart
as Kat

Mind Games
as Hannah Berrick

Gattaca
as Marie Freeman

Last Dance
as Jill

Ed
as Lydia

Star Trek: Discovery
as Admiral Katrina Cornwell · 12 ep.

Revenge
as Loretta Deaton · 1 ep.

Rizzoli & Isles
as Senator Valerie Bloomfield · 1 ep.

Castle
as Claudia Peterson · 1 ep.

Eli Stone
as Rebecca Green · 1 ep.

Private Practice
as Dr. Meg Porter · 5 ep.

Brothers and Sisters
as Bertha Wandell · 3 ep.

Grey's Anatomy
as Gwen Graber · 1 ep.

Boston Legal
as Rachel Lewiston · 4 ep.

NCIS
as Lyndi Crawshaw · 1 ep.
Private Practice
2007