Casting et équipe

Donnie WahlbergDetective Joel Stevens

Neal McDonoughAssistant District Attorney David McNorris

Mykelti WilliamsonPolice Department Detective II Bobby 'Fearless' Smith

Gary BasarabaPolice Department Police Officer III Ray Hechler

Lana ParrillaTeresa Ortiz, paramedic in season one, rookie police officer in season two

Jason GedrickPolice Department Police Officer II Tom Turcotte

Nina GarbirasAndrea Little, a reporter (season one)

Megan WardKelly Stevens

Vanessa WilliamsDetective Katherine Pierce

Dorian HarewoodCaptain Ronald Hicks

Chase EllisonWillie Stevens

Kelly RowanMarian McNorris

Rick GomezDetective Daniel Ramos

Kelly HuRachel Durrel

Matt CravenDr. Michael Hirsch

Kim MurphySusan

David ProvalPaul Turcotte

Rino RomanoPaul Turcotte in 1976

J.C. BrandyChandler

Wendy SchaalDarlene Beechem

DH

Derek HamiltonJimmy Black

Alia ShawkatDenise Stein

LeVar BurtonMarvin Lloyd

John KapelosHugo Pinkston

Kathleen WilhoiteSally McBride

Daniel ZacapaCarlos Ramirez

Stacy KeachJack 'Mac' McNorris

Nathan WestZack Berman

Bob ClendeninDoofus

Virginia MadsenErika Ashland

Cody KaschTrevor 'T.J.' Jankowski Jr.

Shannon SturgesCherie Hechler

Chris GartinJonny Rand

Peter TrencherCoroner

Beau BillingsleaPolice Academy Commandant

Tyler ChristopherHolden McKay

Alimi BallardYoung Marvin Lloyd

Jennifer SkyVanessa Griggs / Laura

LC

Lisa CerasoliMia Lang

Sheeri RappaportJanice Edwards

Arlen EscarpetaCantrel LaFontaine

Alexander GouldTom at 8

Christian CamargoBradley Dawson

Kate FlanneryTracey

Larry JoshuaChet

Miguel A. Núñez Jr.Freaktown

Raja FenskePuppet

Rick RavanelloSean Dornan

Trent CameronBernie Leonard

Howard HessemanMel Castle

Kevin DunnRon Berman

Erin DanielsOfficer Karen Crane

Stephen MachtJohn Donadoni

Megan HenningEmily

Wade WilliamsPaul Barnes

Joe PennyLes Van Buren

Ken DavitianJewelry Store Owner

Alex MenesesVicki Pineda

Tracey WalterDwayne

Michael MuhneyChris Griggs

Katee SackhoffHolly

Ernie GrunwaldCharlie Graham

Jessica LundyVivian Colson

MP

Mimi PaleyRachel Stein

Robert WisdomChronic (Daryl C. Norcott)

Fran BennettBeatrice Rahming

Mark MosesDon Schneider

Marquise WilsonFriend #3

Gina HechtDoreen Stein

Michael Paul ChanLobo Chan

Dan ByrdEddie Colson

Ramón FrancoLuis Valdoriso

Rebecca LowmanLisa

Dayo AdeBanger

Tommy HinkleyMr. Flannery

Jason GeorgeThomas Paltrow

Doug HutchisonWally Pollard

Christopher GorhamGordon Sinclair

Robert LaSardoPope

Nigel GibbsAlex Leonard

Ali HillisMelanie Stone

Loren LesterHomeowner

Paige HurdGrace Adams

Fredric LehneReggie Flood

April GraceCynthia

Silas Weir MitchellErik Sorenson

Kirk TrutnerHomeless Man

Dempsey PappionYoung Greg Haymer

Lombardo BoyarEddie

Kristin BauerProstitute

Joe SpanoHenry Stein

PM

Paul MoyerPaul Moyer

Neil Patrick HarrisPeter Corman

DD

David DunardIrate Grandfather

Frank John HughesOfficer Vincent Manzani

Patricia WettigNora Jean Flannery

Beth GrantLandlady

Gregg HenryRobert Colson

Garikayi MutambirwaFriend #2

Michael DempseyRecovering drunk

Bobby HoseaGreg Haymer

Anthony MontgomeryRecruit Dwight Baker

Richard ErdmanKevin's Dad

Christopher KriesaWarden Frank Collins

David BurkeJay Colson

Chris MulkeyKevin Van Horn

Cullen DouglasArnold Rabjohn

DF

Dakota FloeterYoung Wally Pollard

Ray LaskaEdward Nelson

Mark TottyChip Pollard

Henry G. SandersPolice Sergeant Miller

Annika PetersonKatrina

DR

Demetra RavenLara

Brian SitesTaylor Gates

Salvator XuerebJohn McBride

Ryan StockstadParamedic (uncredited)

Kim RhodesJulia Sloane

Gregory WhiteJudge Harold Denby

JM

Josh MylerCourier

Robert TreborKeith (uncredited)