Bill Moseley ( Bill Moseley )

Logan Burnhardt

Patricia Tallman ( Patricia Tallman )

Lucy

Navid Negahban ( Navid Negahban )

Abir

David Moscow ( David Moscow )

Gil Brickman

Joshua Feinman ( Joshua Feinman )

Burt

Lakshmi Manchu ( Lakshmi Manchu )

Gabbi

Federico Dordei ( Federico Dordei )

Khalil

Susan Ruttan ( Susan Ruttan )

Maggie

Herzl Tobey ( Herzl Tobey )

Majeed

Anthony Ray Parker ( Anthony Ray Parker )

Tanner

Haley Pullos ( Haley Pullos )

Dee Dee

Larry Varanelli ( Larry Varanelli )

Press Secretary

Danielle Petty ( Danielle Petty )

Woman on the Run

Elle Travis ( Elle Travis )

Natalie Fiennes

Corbin Bernsen ( Corbin Bernsen )

Dr. F

Dan Lauria ( Dan Lauria )

Fred

Jeanne Cooper ( Jeanne Cooper )

Paranoid Caller #1

Larry Drake ( Larry Drake )

Vernon

Will Wallace ( Will Wallace )

Paranoid Caller #2

J.T. Tepnapa ( J.T. Tepnapa )

Maniac

Jason Davis ( Jason Davis )

Maniac

Alexander Fazel ( Alexander Fazel )

Serious Caller

DeeDee Bigelow ( DeeDee Bigelow )

Maniac

Mocean Melvin ( Mocean Melvin )

Caller (voice)

Tammy Felice ( Tammy Felice )

Colleague #1

Dan Olivo ( Dan Olivo )

Panicked Caller

Randy Mulkey ( Randy Mulkey )

News Anchor #2

Ruben Pla ( Ruben Pla )

Radhi

David Leach ( David Leach )

Maniac

Neil Garguilo ( Neil Garguilo )

Colleague #2

Kevin T. McCarthy ( Kevin T. McCarthy )

Paranoid Caller #3

Peter Leake ( Peter Leake )

Relieved Caller

Andrea Shreeman ( Andrea Shreeman )

Yolanda

Justin Rodgers Hall ( Justin Rodgers Hall )

Maniac

Larry Varanelli ( Larry Varanelli )

Press Undersecretary

Lauren Leah Mitchell ( Lauren Leah Mitchell )

Jill

T.L. Lankford ( T.L. Lankford )

Scientist

Kelby Floyd ( Kelby Floyd )

Maniac

Sonia Kazarova ( Sonia Kazarova )

W.H.O. Operator

Sharon Savene ( Sharon Savene )

Maniac

Chris Vanderhorst ( Chris Vanderhorst )

Maniac

Michael Manuel Sanders ( Michael Manuel Sanders )

Informed Caller

Terry F. Smith ( Terry F. Smith )

Zombie

Will Wallace ( Will Wallace )

Paranoid Caller #2

Will Rideau ( Will Rideau )

Maniac

J. Hunter Ackerman ( J. Hunter Ackerman )

Mike/ Maniac

Grieco, Karen ( Grieco, Karen )

Maniac

Brandon Kyle Davis ( Brandon Kyle Davis )

Attack Victim

Justin Rambow ( Justin Rambow )

Maniac

Gustavo López ( Gustavo López )

Maniac

Brian Metran ( Brian Metran )

Maniac

Mike McIntosh ( Mike McIntosh )

Reporter

Chauna Wertlow ( Chauna Wertlow )

Maniac

Joseph Joyce ( Joseph Joyce )

Maniac

Phyllis Lucero ( Phyllis Lucero )

Maniac

Brett Hunt ( Brett Hunt )

Maniac

Josh Shadid ( Josh Shadid )

Maniac

Roger E. Fanter ( Roger E. Fanter )

Old Ted

Beto Torres ( Beto Torres )

Cholo

Clayton Fletcher ( Clayton Fletcher )

Maniac

Lynne Waite ( Lynne Waite )

Maniac

Jill Shaffer ( Jill Shaffer )

Maniac

Heather Von Dillenburg ( Heather Von Dillenburg )

Maniac

Robert Adams ( Robert Adams )

Maniac

Dakota Tim ( Dakota Tim )

Maniac

Chris Sanita ( Chris Sanita )

Maniac

Angel Trujillo ( Angel Trujillo )

Maniac

Marissa Grams ( Marissa Grams )

Maniac

Patrick Schnabel ( Patrick Schnabel )

Maniac

Mike Miklosko ( Mike Miklosko )

Maniac

Ziv Butbeka ( Ziv Butbeka )

Maniac

Rodrigo López ( Rodrigo López )

Maniac

Teresa Ousley ( Teresa Ousley )

Maniac

Faulkner Hudson ( Faulkner Hudson )

Maniac

Wagner Sandoval ( Wagner Sandoval )

Maniac

Daisy Gomez ( Daisy Gomez )

Maniac

Mahlon Robertson ( Mahlon Robertson )

Maniac

Anna Waite ( Anna Waite )

Maniac

Vicky Gonzalez ( Vicky Gonzalez )

Maniac

Johnothan Carter ( Johnothan Carter )

Maniac

Kevin Anders ( Kevin Anders )

Maniac

Gus Lopez ( Gus Lopez )

Maniac

Sean MacArthur ( Sean MacArthur )

Murdered Caller

Andrew Trujillo ( Andrew Trujillo )

Maniac

Lindsay Arehart ( Lindsay Arehart )

Maniac

Cassandra Trujillo ( Cassandra Trujillo )

Maniac

Renee Brookdale ( Renee Brookdale )

Maniac

Devon Voorhees ( Devon Voorhees )

Maniac

Jan Kooren ( Jan Kooren )

Maniac

Dakota Voorhees ( Dakota Voorhees )

Maniac

Jennifer Dwetham ( Jennifer Dwetham )

Maniac

Heather Whitaker ( Heather Whitaker )

Maniac

Ryan Mitchell ( Ryan Mitchell )

Maniac

Barsha Fields ( Barsha Fields )

Maniac

Jennifer Leete ( Jennifer Leete )

Maniac

Joel Myhre ( Joel Myhre )

Maniac

Diego Gomez ( Diego Gomez )

Maniac

Cromwell Aspajo ( Cromwell Aspajo )

Maniac

Sharenna Owens ( Sharenna Owens )

Maniac

Chan'nel Ward ( Chan'nel Ward )

Maniac

Daniel Higgins ( Daniel Higgins )

Maniac

Susan Shine ( Susan Shine )

Maniac

Crystal Casares ( Crystal Casares )

Maniac

Eric Komans ( Eric Komans )

Maniac

Matt Lande ( Matt Lande )

Maniac

Jacob Sandomire ( Jacob Sandomire )

Maniac

Brad Spanbauer ( Brad Spanbauer )

Maniac

Dylan Voorhees ( Dylan Voorhees )

Maniac

Tyrone B. Kendall II ( Tyrone B. Kendall II )

Maniac

Alonzo D. Jackson ( Alonzo D. Jackson )

Maniac

Allan Deluca ( Allan Deluca )

Maniac

Falconer Hudson ( Falconer Hudson )

Newsroom Maniac

Michael Durham ( Michael Durham )

Andrew Sacks ( Andrew Sacks )

Maniac

Tracy Sandoval ( Tracy Sandoval )

Maniac

Mike Mahaffey ( Mike Mahaffey )

Eastbrook Caller

Gerri Swain ( Gerri Swain )

Maniac

Christopher Vasquez ( Christopher Vasquez )

Maniac

Mike Vizcaino ( Mike Vizcaino )

Maniac

Jerry Mussari ( Jerry Mussari )

Maniac

Danielle Vaughn ( Danielle Vaughn )

Maniac

McCready Baker ( McCready Baker )

Newscaster (uncredited)