Once you get in, you can't get out.
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.
$4,158,370
$7,819,851
April 20, 2001
Pathé, UK Film Council
19 people
Thora Birch
Liz Dunn
Acting
Desmond Harrington
Mike Steel
Acting
Keira Knightley
Frances 'Frankie' Almond Smith
Acting
Laurence Fox
Geoff Bingham
Acting
Embeth Davidtz
Dr. Philippa Horwood
Acting
Steven Waddington
DCS Tom Howard
Acting
Emma Griffiths Malin
Daisy
Acting
Kelly Hunter
DI Chapman
Acting
Daniel Brocklebank
Martyn Taylor
Acting
Jemma Powell
Minnie (as Gemma Powell)
Acting
Gemma Craven
Mrs. Dunn
Acting
Anastasia Hille
Gillian
Acting
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