TMDB 6.22001• 1h 42m
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.
Cast
![Thora Birch](https://image.tmdb.org/t/p/w185/7rRirYcL5JJS5P2W67yhsmAfO3x.jpg)
Thora Birch
Liz Dunn
![Desmond Harrington](https://image.tmdb.org/t/p/w185
/hylBgwz1akNoX03glhMnqNxLCqm.jpg)
Desmond Harrington
Mike Steel
![Keira Knightley](https://image.tmdb.org/t/p/w185
/bRC1B2VwV0wK3ElciFAK6QZf2wD.jpg)
Keira Knightley
Frances 'Frankie' Almond Smith
![Laurence Fox](https://image.tmdb.org/t/p/w185
/4x273XNUg23P8OkGx6O3f6PuTjw.jpg)
Laurence Fox
Geoff Bingham
![Embeth Davidtz](https://image.tmdb.org/t/p/w185
/nwsdu9lOsKJ5v9RwOCc7kAiuxSO.jpg)
Embeth Davidtz
Dr. Philippa Horwood
![Steven Waddington](https://image.tmdb.org/t/p/w185
/gmlX5NNJI5HoNrK3RUPwBUmUgBW.jpg)
Steven Waddington
DCS Tom Howard
![Emma Griffiths Malin](https://image.tmdb.org/t/p/w185
/4kQM09dsYnpPhU0FjC3axQdNU9g.jpg)
Emma Griffiths Malin
Daisy
![Kelly Hunter](https://image.tmdb.org/t/p/w185
/mxHkBA31UbinH6iCDAbHrNVtF1k.jpg)
Kelly Hunter
DI Chapman
![Daniel Brocklebank](https://image.tmdb.org/t/p/w185
/dFzwJY1YAFB0lXkjbYFKeiZdxRw.jpg)
Daniel Brocklebank
Martyn Taylor
![Jemma Powell](https://image.tmdb.org/t/p/w185
/m4NMjDkqYKt7Dx7QjgItEkCSlzj.jpg)
Jemma Powell
Minnie (as Gemma Powell)