
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.

as Liz Dunn

as Mike Steel

as Frances 'Frankie' Almond Smith

as Geoff Bingham

as Dr. Philippa Horwood

as DCS Tom Howard

as Daisy

as DI Chapman

as Martyn Taylor

as Minnie (as Gemma Powell)

as Mrs. Dunn

as Gillian

as Policewoman

as Solicitor

as Boy in School

as Doctor

as Reporter

as Reporter

as Reporter