Isa Brown on lühikest kasvu ning tüsedavõitu ja tal on tavaliselt kaasas suur vihmavari. Selle petlikult süütu välimuse varjus peitub inimhinge hea tundja ja kuritegude osav lahendaja – sellele on aidanud kaasa preestriamet ja paljude pihtimuste kuulamine. Kui Sherlock Holmes kasutas kuritegude lahendamisel teaduslikke meetodeid, siis isa Brown loodab pigem oma intuitsioonile ja sellele, mida teab inimlikust kurjusest. Ta püüab panna end mõistatust lahendades kurjategija olukorda, mõelda tema kombel ning jõuda nii lahenduseni. Kõigile juhtumitele antakse lugude lõpus siiski ka ratsionaalne seletus.
Gilbert Keith Chesterton was an English writer, philosopher, lay theologian, and literary and art critic.
He was educated at St. Paul’s, and went to art school at University College London. In 1900, he was asked to contribute a few magazine articles on art criticism, and went on to become one of the most prolific writers of all time. He wrote a hundred books, contributions to 200 more, hundreds of poems, including the epic Ballad of the White Horse, five plays, five novels, and some two hundred short stories, including a popular series featuring the priest-detective, Father Brown. In spite of his literary accomplishments, he considered himself primarily a journalist. He wrote over 4000 newspaper essays, including 30 years worth of weekly columns for the Illustrated London News, and 13 years of weekly columns for the Daily News. He also edited his own newspaper, G.K.’s Weekly.
Chesterton was equally at ease with literary and social criticism, history, politics, economics, philosophy, and theology.