Odessa Young

Lily Colson

Hari Nef

Bex Warren

ABRA

Em Lacey

Suki Waterhouse

Sarah Lacey

Anika Noni Rose

Nancey Lacey

Colman Domingo

Principal Turrell

Maude Apatow

Grace

Bella Thorne

Reagan Hall

Joel McHale

Nick Mathers

Bill Skarsgård

Mark

Cody Christian

Johnny

Kathryn Erbe

Rebecca Colson

Susan Misner

Rose Mathers

Danny Ramirez

Diamond

Kelvin Harrison, Jr.

Mason

Noah Galvin

Marty

Joe Chrest

Lawrence

Jeff Pope

Officer Ritcher

Jennifer Morrison

Margie Duncan

J.D. Evermore

Chief Patterson

Lukas Gage

Eric Lafont

Cullen Moss

Mayor Bartlett

Stacie Davis

Langley

Destiny Reed

Allie

Liz Elkins Newcomer

Mrs. Bartlett

Wolfgang Novogratz

Dave

Isabella Esposito

Nikki

Lucy Faust

Alexis Turrell

Geraldine Singer

Lisa Sanders

Caden Swain

Donny

Andrene Ward-Hammond

Officer Daniels

Silas Cooper

Grace's Father

Toney Chapman Steele

Angry Mob (uncredited)

Colby Slayter

Red Hat Football Player (uncredited)

William Schaff

Masked Man (uncredited)

Rey Reynaud

Masked Neighbor / Diamond Body Double (uncredited)

Austin William Morgan

Student (uncredited)

Bruce Vincent Logan

Masked Gunman (uncredited)

Felicity Lartigue

Cheerleader (uncredited)

Emily LaGroue

Cheerleader (uncredited)

Stephanie Davis Holmes

Citizen (uncredited)

Josephine Hennessey

Masked Townsperson (uncredited)

Paisley Gant

Student (uncredited)

Sarah-Grace Donnelly

Student (uncredited)

Kirsten Bazet

A / V Club Student (uncredited)

April Asbury

Mob Patron (uncredited)

Issa Abou-Issa

Masked Person (uncredited)

Rachel Whitman Groves

Woman in House

Greg DiLeo

Salem Resident 2

T.C. Carter

Snap Back

Ariel Fournier

Salem High Girl

Christopher Berry

Salem Resident 1

Kennon Kepper

Teammate 2

Gabriel Orion McCulloch

Tank Top

Anthony Marble

Marty's Father

Charley Vance

Guy in Street

Daniel Williams-Lopez

Stone-Faced Teen

Lance E. Nichols

FBI Agent Richard Vernon

Leticia Jimenez

Diamond's Mom

Lorelei Gilbert

Carlie

Tom McCafferty

Some Guy

Ben Matheny

Passenger

Ann Mahoney

Mom in Supermarket

Jacob A. Brown

Teammaye