Joey King
Wren
Julia Goldani Telles
Hallie
Jaz Sinclair
Chloe
Annalise Basso
Katie
Alex Fitzalan
Tom
Taylor Richardson
Lizzie
Javier Botet
Slender Man
Jessica Blank
Hallie's Mom
Michael Reilly Burke
Hallie's Dad
Kevin Chapman
Mr. Jensen
Miguel Nascimento
Kyle
Eddie Frateschi
Biology Teacher
Oscar Wahlberg
Boy with Glasses
Danny Beaton
Burley Kid
Marc Carver
Doctor
Kris Sidberry
Librarian
Angela Hope Smith
Nurse
Damon D'Amico Jr.
Student
Timothy Brierley
Tour Guide
Kayla Caulfield
High School Student (uncredited)
Jeffrey Corazzini
Police Officer (uncredited)
Michael Tow
Calculus Teacher (uncredited)
Adrian M. Mompoint
Jock (uncredited)
Kieran Tuomey
Student (uncredited)
Gabrielle Lorthe
Cheerleader (uncredited)
Yohanna Perez
Student (uncredited)
Juliet Loveland
Makeup Department Head
Jamey Scott
Sound Designer
JoJo Myers Proud
Key Makeup Artist
Robert Schleinig
Leadman
Paula Dion
Hair Department Head
Megan Blake
Graphic Designer
Isaac Nadreau
Construction Foreman
Jeff Gross
Foley Mixer
Deborah Newhall
Costume Design
Shayna Passaretti
Key Hair Stylist
Scooter Perrotta
Second Second Assistant Director
Peter Stevenson
Boom Operator
Jacki O'Brien
Second Assistant Director
Nick Offord
Sound Re-Recording Mixer
Julie LeShane
Special Effects Makeup Artist
Tom Davies
First Assistant Director
Kimmie Johnson
Art Department Coordinator
Anita Cannella
Foley Artist
Ryan Juggler
Sound Editor
Amy Kane
Foley Artist
Kim Leoleis
Set Decoration
Mathieu Baptista
Special Effects Makeup Artist
Jesse Cambria
Greensman
Keith Thompson
Concept Artist
Adam McClain
Construction Coordinator
Shane Shisheboran
Special Effects Makeup Artist
Laura G. Foley
Property Master
Jonathan Gesinski
Storyboard Artist
Sean Andrew Murray
Concept Artist
Roy Farfel
Stunt Coordinator
Thomas Bellotti
Second Assistant "B" Camera
William M. Weberg
Key Grip
Felix Giuffrida
Second Assistant "A" Camera
Melanie Patten
Lighting Technician
Grant Conway
Music Editor
Mary Fox
Production Accountant
Jill Sacco
Production Coordinator
Warren A. Weberg
Best Boy Grip
Erin Cole
Assistant Production Coordinator
Lucas McGowen
Aerial Camera
Scott Lebeda
Camera Operator
Nate Underkuffler
Music Editor
Rosa J. Colón
Key Costumer
Steven Ticknor
Sound Re-Recording Mixer
Zachary K. Lazar
Genetator Operator
Roger Marbury
Rigging Gaffer
Dan Mason
First Assistant "A" Camera
Robin Chalfin
Tailor
Dana Starbard
Still Photographer
Heather Whitty
Extras Casting
Greg Harvey
Stunt Coordinator
John Vincent Mason
Utility Stunts
Tom Anas
Production Secretary
Ilyana Eberhardt
Stunt Double
Nolan Ball
First Assistant "B" Camera
Jesse Goldberg
Gaffer
Devon Catucci
Camera Operator
James R. Mitchell
Best Boy Electric
Steve Sikora
Lighting Technician
Steve Urban
Sound Editor
Terry Eden
Electrician
Jennifer Lynn Tremblay
Assistant Costume Designer
Joshua Sgarlata
First Assistant Editor
Aidan Payne
Script Supervisor
Debbie Holbrook
Costume Supervisor
Chetan Rathod
Visual Effects
Lance Ranzer
Visual Effects Supervisor
Sylvain White
Director
Ramin Djawadi
Original Music Composer
Victor Surge
Characters
Tracey Nyberg
Executive Producer
Javier Bennassar
Sound Designer
David Birke
Writer
Bradley J. Fischer
Producer
Jake York
Editor
Nancy Nayor
Casting
Ryan H. Cunningham
Executive Producer
Blair Skinner
Production Supervisor
Louis Sallerson
Executive Producer
William Sherak
Producer
Robyn Meisinger
Producer
James Vanderbilt
Producer
Andrea Ajemian
Co-Producer
Sarah Snow
Producer
Adam Kolbrenner
Executive Producer
Brandon Campbell
Music
Kevin S. Parker
Sound Mixer
Trevor Metz
Sound Effects Editor
Luca Del Puppo
Director of Photography
John Haley
Visual Effects Supervisor
Jeremy Woodward
Production Design
Glenn S. Gainor
Executive Producer