“This is my friend Father Brown,” said Flambeau. “I’ve often wanted you to meet him. Splendid weather, this; a little cold for Southerners like me.” “Yes, I think it will keep clear,” said Angus, sitting down on a violet-striped Eastern ottoman. “No,” said the priest quietly, “it has begun to snow.” And, indeed, as he spoke, the first few flakes, foreseen by the man of chestnuts, began to drift across the darkening windowpane. “Well,” said Angus heavily. “I’m afraid I’ve come on business, and rather jumpy business at that. The fact is, Flambeau, within a stone’s throw of your house is a fellow who badly wants your help; he’s perpetually being haunted and threatened by an invisible enemy—a scoundrel whom nobody has even seen.” As Angus proceeded to tell the whole tale of Smythe and Welk