Father Brown is a fictional character, an amateur sleuth created in the early 1900s by English novelist G. K. Chesterton.
Chesterton based the character on Father John O’Connor (1870–1952), a parish priest in Bradford who was involved in Chesterton’s conversion to Catholicism in 1922.
Unlike the more famous fictional detective Sherlock Holmes, Father Brown’s methods tend to be intuitive rather than deductive. He explains his method in “The Secret of Father Brown”: “You see, I had murdered them all myself… I had planned out each of the crimes very carefully. I had thought out exactly how a thing like that could be done, and in what style or state of mind a man could really do it. And when I was quite sure that I felt exactly like the murderer myself, of course I knew who he was.” (Wikipedia)
“My name is Brown. Pray excuse me. I’ve come about that business of the MacNabs. I have heard, you often help people out of such troubles. Pray excuse me if I am wrong.”
By this time he had sprawlingly recovered the hat, and made an odd little bobbing bow over it, as if setting everything quite right.
“I hardly understand you,” replied the scientist, with a cold intensity of manner. “I fear you have mistaken the chambers. I am Dr Hood, and my work is almost entirely literary and educational. It is true that I have sometimes been consulted by the police in cases of peculiar difficulty and importance, but—”
“Oh, this is of the greatest importance,” broke in the little man called Brown. “Why, her mother won’t let them get engaged.” And he leaned back in his chair in radiant rationality.