Danielle Panabaker
Maddy
Matt Bush
Barry
Katrina Bowden
Shelby
Jean-Luc Bilodeau
Josh
David Koechner
Chet
Chris Zylka
Kyle
Adrian Martinez
Big Dave
Paul James Jordan
Travis
Meagan Tandy
Ashley
David Hasselhoff
David Hasselhoff
Christopher Lloyd
Mr. Goodman
Paul Scheer
Andrew
Gary Busey
Clayton
Clu Gulager
Mo
Sierra Fisk
Bethany
Matt Lintz
Freckled Boy
Sylvia Jefferies
Young Mother
Jenna Hurt
Rochelle
Rozlyn Papa
Dawn
Alisa Harris
Hysteric / Stocky Woman
Stacy Rabon
Fearful Woman
Nate Panning
Waterpark Patron
Kathy Sue Holtorf
Bimbo Lifeguard
Irina Voronina
Kiki
Ving Rhames
Deputy Fallon (uncredited)
Sarah Wilson
Massacre victim (uncredited)
Katie Garner
Lizzie the Lifeguard (uncredited)
Lilith Fury
Wet T-Shirt Girl (uncredited)
Tabitha Taylor
Lifeguard (uncredited)
Bo Webb
"A" Camera Operator
John Gulager
Director
Marcus Dunstan
Writer
Patrick Melton
Writer
Joel Soisson
Writer
Pete Goldfinger
Characters
Josh Stolberg
Characters
Mark Canton
Producer
Joel Soisson
Producer
Marc Toberoff
Producer
Elia Cmiral
Original Music Composer
Alexandre Lehmann
Director of Photography
Martin Bernfeld
Editor
Devin C. Lussier
Editor
Kirk M. Morri
Editor
Nancy Nayor
Casting
Ermanno Di Febo-Orsini
Production Design
Pratik Chaudhari
Visual Effects
Jennifer Badger
Stunt Double
Ashley Cusato
Utility Stunts
Angelique Fawcette
Stunt Double
Jeremy Owens
Stunts
Dino Muccio
Utility Stunts
Tina Fuchs Wanner
Stunt Double
Thurston Edwards
Set Decoration
Carol Cutshall
Costume Design
Kari Delaney
Key Hair Stylist
Holly Sago
Key Makeup Artist
Cecilia Veradi
Makeup Department Head
Alisa Fredericks
First Assistant Director
Emma Madeline Ross
Art Department Coordinator
Trip Brock
Supervising Sound Editor
Peter D. Lago
Sound Effects Editor
Alexander Pugh
Sound Effects Editor
David Beavis
Special Effects Supervisor
Jeff Lietz
Visual Effects Supervisor
John Copeman
Stunt Coordinator
Catherine Bayley
Key Costumer
Victor M. Giarrusso
Costume Supervisor
Mike Flicker
Supervising Music Editor
Matt Friedman
Music Editor
Richard Glasser
Music Supervisor
Amber Harley
Script Supervisor
Jason Salzman
Production Coordinator
Harvey Weinstein
Executive Producer
Keith Levine
Executive Producer's Assistant
Bob Weinstein
Executive Producer
Ian Shedd
Dialogue Editor
Jackie Johnson
Dialogue Editor
James Cowan
Digital Intermediate Producer