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.
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6.2/10Rating on TMDBFrom The Movie Database943 votes
Thora BirchLiz Dunn
Desmond HarringtonMike Steel
Keira KnightleyFrances 'Frankie' Almond Smith
Laurence FoxGeoff Bingham
Embeth DavidtzDr. Philippa Horwood
Steven WaddingtonDCS Tom Howard
Emma Griffiths MalinDaisy
Kelly HunterDI Chapman
Daniel BrocklebankMartyn Taylor
Jemma PowellMinnie (as Gemma Powell)
Gemma CravenMrs. Dunn
Anastasia HilleGillianMaria PastelPolicewomanCelia MontagueSolicitor
Kevin TrainorBoy in School
