Officer John "Sully" Sullivan

Skipp Sudduth

Doc Parker / Monte Parker

Michael Beach

Officer Ty Davis, Jr.

Coby Bell

Bobby Caffey

Bobby Cannavale

Det. Faith Yokas

Molly Price

Carlos Nieto

Anthony Ruivivar

Jimmy Doherty

Eddie Cibrian

Kim Zambrano

Kim Raver

Officer Maurice "Bosco" Boscorelli

Jason Wiles

Guest Star

Sara Ramirez

Fred Yokas / —

Chris Bauer

Guest Star

Susan May Pratt

—

Joe Lisi

Guest Star

Brad Beyer

Guest Star

Kristopher Scott Fiedel

Guest Star

Khandi Alexander

Alex Taylor / —

Amy Carlson

Guest Star

George Dzundza

Guest Star

Eugene Byrd

Guest Star

Lonette McKee

Guest Star

Nick Sandow

Guest Star

Kirk Acevedo

Guest Star

Nancy O'Dell

Guest Star

Nahanni Johnstone

Guest Star

Mike Figueroa

Guest Star

Jason Sehorn

Guest Star

Dagmara Dominczyk

Emily Yokas / —

Bonnie Dennison

Guest Star

Nick Acevedo

Guest Star

Claire Alpren

Guest Star

Savannah Haskel

Guest Star

Anne Twomey

Guest Star

Mia Farrow

Irene

Anne Pitoniak

Guest Star

Lisa Vidal

Guest Star

Jack Klugman

Guest Star

Judy Reyes

Dana

Monica Trombetta

Guest Star

Amanda Bernero

Guest Star

Eva LaRue

Guest Star

Linda Emond

Guest Star

Savannah Haske

Maritza Cruz / —

Tia Texada

Guest Star

Anthony DiSando

Guest Star

Karen Young

Guest Star

Caralyn Kozlowski

Guest Star

Dan Lauria

Guest Star

Marisa Ryan

—

Bill Walsh

Guest Star

Matt Emmich

Johnson

Michael Mulheren

Guest Star

Joshua Harto

Guest Star

Tim Meadows

Lost Boy

Max Huffman

Procter

Saundra McClain

Sasha Monroe / —

Nia Long

—

John Bolger

Grace Foster / —

Cara Buono

Brandan Finney

Josh Stewart

—

Patti D'Arbanville

—

Sakina Jaffrey

—

Charles Haid

—

Manny Perez

—

Stephen Singer

—

Jon Seda

—

Roy Scheider

—

Tawny Cypress

—

James Rebhorn

John Miller

Aidan Quinn

—

Anson Mount

—

Charlie Day

—

Wyclef Jean

—

Wendell Pierce

—

Tim Kang