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.
Not streaming on a subscription service in the US right now.
Starring Thora Birch, Desmond Harrington, Keira Knightley, Laurence Fox, Embeth Davidtz, Steven Waddington, Emma Griffiths Malin, Kelly Hunter, Daniel Brocklebank, Jemma Powell