Four teenagers at a British private school secretly uncover and explore the depths of a sealed underground hole created decades ago as a possible bomb shelter.
Thora Birch
Liz Dunn
Desmond Harrington
Mike Steel
Keira Knightley
Frances 'Frankie' Almond Smith
Laurence Fox
Geoff Bingham
Embeth Davidtz
Dr. Philippa Horwood
Steven Waddington
DCS Tom Howard
Emma Griffiths Malin
Daisy
Kelly Hunter
DI Chapman
Daniel Brocklebank
Martyn Taylor
Jemma Powell
Minnie (as Gemma Powell)
Gemma Craven
Mrs. Dunn
Anastasia Hille
Gillian
Maria Pastel
Policewoman
Celia Montague
Solicitor
Kevin Trainor
Boy in School
Lolita Chakrabarti
Doctor
Claire Fox
Reporter
Jennifer Hockman
Jack Tanner
Suzanne Warren
Producer
Bill Shephard
Line Producer
Jeremy Bolt
Nick Hamm
Director
Eve Stewart
Production Design
François Ivernel
Executive Producer
Denis Crossan
Director of Photography
Ben Court
Screenplay
Lisa Bryer
Verity Hawkes
Costume Design
Andrea Calderwood
Caroline Ip
Pippa Cross
Rebecca Hodgson
Niven Howie
Editor
Tom Read
Art Direction
Clint Mansell
Original Music Composer
Andrew Grant
Guy Burt
Novel
Sarah Monzani
Makeup Artist
Simon Thompson
Hairstylist
Jack Stew
Foley Artist
Billy Hopkins
Casting
Tim Alban
Sound
Kerry Barden
Suzanne Crowley
Kate Rhodes James
