Lured in by a damsel in distress, the Saint finds himself in the hands of lackeys from a gang. What does the gangster, Kelly, have to tell the Saint? It’ll take work on Simon’s part to keep out of trouble when gunshots ring out from behind the locked office door.
Though the Connely Silver mine has been emptied of all it’s wealth, Simon is sure there’s more to it. Still sticking up for the dame, Betty Connely, Simon faces off with a thug for some quick justice. Doing some prospecting of his own, Simon takes Betty out of town to visit her mine.
In the mine shaft, danger arises. Simon fends it off, and finds the answer he needs. If the mine is played out, what makes it so valuable? There’s still one more twist to this mystery, but Simon explains the nuances behind the secrets as he exposes, and hands over a killer.