| Lori Heuring | Karen Tunny |
| Scout Taylor-Compton | Sarah Tunny |
| Chloƫ Moretz | Emma Tunny |
| Geoffrey Lewis | Harold |
| Velizar Binev | Bull Foreman |
| Ben Cross | Hanks |
| Chris Jamba | Sean |
| Michael McCoy | Walter |
| Martin McDougall | Old Mr. Carlton |
| Julie Rogers | Lisa |
| Craig Vye | Tim |
| George Zlatarev | Explosives Captain |
Karen Tunny is a recent widow and takes her two daughters, Sarah and Emma, to move into a remote mountain home they inherited from her husband. Karen does not realize the home is built near an old mine, where many children were buried alive in the early days of the 20th century.
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