The Heap [Baron Eric von Emmelman]; Jules (cave guide); Anton (cave guide); Martha (Anton's wife); Marie (Anton and Martha's daughter); un-named casino croupier (death); Cabette (villain, casino owner)
Kindly Anton sends his daughter to the proprietor of a gambling casino to warn him that the cave below his casino has a major fault line through its strata, and is in imminent danger of collapse. But before the warning can be given the collapse occurs and the casino sinks into the cave's interior. Unfortunately, the evil proprietor refuses to allow patrons to exit, demanding that he be the first to exit. Fate intervenes and it's up to the Heap to save the patrons.